optional是什么意思_optional的用法_翻译_短语搭配_权威例句

柯林斯词典

同根词

词根：opt

• adv.

  optionally 随意地

• n.

  option [计] 选项；选择权；买卖的特权

• vi.

  opt 选择

同近义词

• adj.可选择的，随意的

  selectable   /   hit-or-miss

• n.选修科目

  elective subjects

词组短语

1. Optional Practical Training 选择性实习训练 ; 毕业后实习工作许可 ; 专业实习 ; 实习期

2. optional item 可选择项目

3. Optional cargo 选港货物 ; 选卸货物 ; 任意卸货港货物

4. optional regrouping 优化组合 ; 优化配合

5. optional course 选修课，选修课程

6. optional equipment 【计】附加设备；任选设备

7. optional shipment 自由港的装船 ; 水运 任选港的装船

8. optional parameter 任选参数，可选参数

9. optional word 计 选择字 ; 任选字 ; 随意选择字 ; 选项字

10. optional port 选择港 ; 任意港 ; 选卸港 ; 指示提单

11. optional charges 选港费

12. Optional accessories 可选配件 ; 选购配件 ; 扩充设备 ; 可选附件

13. optional exercise 自选动作

14. Optional Fees or Optional Additional 选择卸货港附加费 ; 卸货港附加费 ; 选择卸货港 ; 挑选卸货港附加费

权威例句

1. As a senior next year, I think extra periods should be used to take optional subjects.

作为一名明年即将大四的学生，我认为应该用额外的时间选修科目。《高考真题- 2015 湖南 阅读表达》

2. Constructors have optional extra parameters for the comparison object.

构造函数有可选的额外参数用于比较用的函数对象.《期刊摘选》

3. It's discussed as though it were an optional, quaint and largely irrelevant part of biology.

这种讨论好象是可选择的 、 离奇的或与生物根本无关的事情.《期刊摘选》

4. Taking optional subjects will enrich our mind.

选修科目会丰富我们的思想。《高考真题- 2015 湖南 阅读表达》

5. On lesser amounts, insurance is recommended but optional and taken out at your request.

在少许数额, 保险被推荐但任意和被去掉根据您的请求.《期刊摘选》

6. You took an optional course this semester, didn't you?

你这学期选了一门选修课，是吗？

7. This is an optional feature.

这是可以任选的功能部件。

8. Connection groups are optional.

连接组是可选的。

9. An optional Fault element that provides information about errors that occurred while processing the message.

处理信息时,提供关于产生错误信息的可选择的错误元素.《期刊摘选》

10. Different templates take a different number of optional parameters.

不同的模板接受不同数量的可选参数。

11. However, the alt attribute is optional and may be omitted from particular image elements.

然而, alt的属性是可选的,甚至是可以忽略的.《期刊摘选》

12. If you see humor as an optional form of entertainment, you're missing some of its biggest benefits: humor makes average-looking people look cute and uninteresting people seem entertaining.

如果你认为幽默只是一种可有可无的娱乐形式，那你就忽略了幽默最大的好处：幽默能让长相平平的人看起来更可爱，也能让呆板无趣的人看起来更有趣。

13. The optional wind deflector minimizes drafts and wind turbulence, eliminating wind chill and maximising comfort.

作为备选设备的挡风板也以有效的防止气流干扰, 消除风冷,优化舒适度.《期刊摘选》

14. Optional argument which specifies what target to build in the subproject.

可选参数用来指定子项目将要构建什么目标.《期刊摘选》

15. The car radio is an optional extra.

汽车上的收音机是可选择的额外配件.《期刊摘选》

16. A holiday isn't an optional extra. In this stressful, frantic world it's a must

休假并非可有可无。在这个紧张而忙碌的世界，它是必不可少的。《柯林斯高阶英汉双解学习词典》

17. It'should include sex of emulative, optional choose, history inheritance and but representative.

它应该包括竞争性、可选择性、历史继承性和可代表性

18. In this first form, the comma following the parameter declarations is optional.

在第一种形式中, 形参声明后面的逗号是可选的.《期刊摘选》

19. Checks authorization for the given operation context and optional message.

检查给定操作上下文和可选消息的授权.《期刊摘选》

20. Actions and predicate are optional.

动作和断言是可选的。

21. Certain courses are compulsory, others are optional.

某些课程是必修的，其他是选修的。《牛津词典》

22. A general categorization ( optional ). Negative, epithelial cell abnormality, or other ( see interpretation below ).

大体分类 ( 可选择项 ). 正常, 或上皮细胞异常, 或其他 ( 参看以下描述 )《期刊摘选》

23. Automatic thread trimmer ( optional ), to increase sewing efficiency and reducing production cost.

备有自动 切线 机型, 可增加缝制效率降低成本.《期刊摘选》

24. Real-time Optional System for Vehicle Scheduling of Logistics Distribution

物流配送车辆调度实时优化系统

25. A holiday isn't an optional extra. In this stressful, frantic world it's a must...

休假并非可有可无。在这个紧张而忙碌的世界，它是必不可少的。《柯林斯高阶英语词典》

26. Speak. This step is optional.

这个步骤是可选的。

27. Schools in our city provide a variety of optional classes to cater to students of different levels.

我们市里的学校提供各式各样的选修课，以满足不同水平的学生。

28. These attributes are optional.

这些属性是可选的。

29. Sex education is a sensitive area for some parents, and thus it should remain optional.

性教育对一些家长来说是个敏感的话题，因此应该还是非强制性的。《柯林斯英汉双解大词典》

30. This is an optional step.

这是一个可选的步骤。

31. Black polyester paint; optional in other special paints on request.

黑色聚脂漆; 按订货要求可选用其它专门的油漆.《期刊摘选》

32. The offline window is optional.

离线窗口是可选的。

33. Airfield: 4 Firehawks, which is enough to destroy an opposing Tech are optional.

机场: 4个火鹰, 这足够您摧毁敌人得高科了,云层推进升级可选.《期刊摘选》

34. An optional proxy host name.

一个可选的代理主机名。

35. Prospective analysis of sustainable development of optional sports teaching in universities

高校体育选项教学可持续发展的影响因素分析

36. Portrait mode is optional.

竖屏模式是可选的。

37. We also recommend a full day optional excursion to the Upper Douro

我们还推荐去杜罗河上游的短途自选一日游。《柯林斯高阶英汉双解学习词典》

38. Others believe that going to classes should be optional for students.

另一些人认为学生应该可以选择去不去上课。

39. Optional subject need to select in certain sub fields inside a subject.

所谓选修科目也只是在某一项目范围内略有捡选余地而以.《期刊摘选》

40. Contributions are purely optional.

捐献完全是随意的.《期刊摘选》

41. A holiday isn't an optional extra. In this stressful, frantic world it's a must.

休假并非可有可无。在这个紧张而忙碌的世界，它是必不可少的。《柯林斯例句》

42. Other bath accessories, such as a loofah sponge, or bath gels, or potpourri, are very optional.

洗澡需要的其他东西，比如丝瓜络、沐浴液、精油都是可选的。

43. Chinese is our optional course to us students of science.

中文是我们这些理科学生的选修科目。

44. The course consists of ten core modules and five optional modules.

这门课程包括十个必修单元和五个选修单元。《牛津词典》

45. Inwrap device was one of the optional equipments.

包装设备是可选设备之一。

46. The appearance of two new optional color effect: soil and grass green bronze.

对于外观,有两种新的效果色可选: 土青铜色与草绿色.《期刊摘选》

47. Metallic paint is an optional extra.

喷金属漆是自由选择的，要额外收费。《牛津高阶英汉双解词典》

48. This element is optional.

这个元素是可选的。

49. According to Professor Johnson, we don't have to read the book if we don't want to, as it is optional.

根据约翰逊教授的说法，我们不想读这本书，就不必读，因为它是选读的。

50. This is an optional parameter.

这是可选的参数。

51. Change to true in order to install an optional feature.

为了安装可选择的特性，将变更为true。

52. Optional extras include cooking tuition at a top restaurant

可选的额外项目包括在顶级餐厅学习厨艺。《柯林斯高阶英汉双解学习词典》

53. It is optional with you.

那是你的自由.《现代英汉综合大词典》

54. You may simply want to indicate that the fragment is optional.

你可能只是想要指出片段是可选择的。

55. Appends the specified element of List ( optional operation ).

在列表尾部添加指定元素 ( 可选操作 ).《期刊摘选》

56. The authentication phase of a PPP session is optional.

点对点协定交谈的验证阶段是可选择的.《期刊摘选》

57. A 4 th cashout request is optional. It costs $ 100 USD.

第4个请款是可选择的.费用100刀.《期刊摘选》

58. The cassette player is an optional extra in this make of car.

这种型号汽车如需盒式磁带唱机费用另计.《期刊摘选》

59. Electrical control has applied famous brand ( optional) parts.

电气控制可采用名牌（选配）元件。

60. Special lighting and climate control are optional, since "I Am" is immaterial …

特殊照明和温度控制可有可无，因为“我存在”并不是一件实物。

61. Analysis on the Optional Situation of Accounting Policy for Listed companies in China

我国上市公司会计政策选择状况的分析

62. Solid Stellite 6 wedge ( optional ) ensures low friction and long service life.

实心钨铬钴合金6楔板 ( 选项 ) 确保较低的磨损和较长的使用寿命.《期刊摘选》

63. The Smoothing and Optional Adaptive Enhancing Algorithm Applied to Nuclear Medical Image

核医学图像的平滑及自适应增强算法

64. Air pressure type cooling device are optional parts by customers.

可依客户需求增设气冷式冷却设备.《期刊摘选》

65. This model comes with a number of optional extras.

这一型号有一系列可供选择的附件，价格另计。《牛津高阶英汉双解词典》

66. Study on the Practice and Theory of Piano Optional Course in Colleges

高校公共钢琴选修课的实践与理论研究

67. A variable automatic transmission , Mitsubishi's first , will be optional.

同时也有一款无极变速器作为可选配置.《期刊摘选》

68. Other templates are optional.

其他模板是可选的。

69. This model comes with a number of optional extras (= things you can choose to have but which you will have to pay extra for) .

这一型号有一系列可供选择的附件，价格另计。《牛津词典》

70. However, this part is also optional.

但该部分也是可选的。《provided by jukuu》

71. Somewhere along the line, holiday tipping went from an optional thank-you for a year of services to a Mafia-style protection racket.

一路走来，节日小费从对一年的服务表示感谢的选择变成了黑社会性质的勒索保护费。

72. This will inform him as to what is necessary and which parts are optional.

这会给他指明什么是必须的,哪些部分是可选择的.《期刊摘选》

73. Our attendance at graduation is optional.

毕业典礼可以自愿参加。

74. Compliance with Practice Advisories is optional.

是否遵守实务公告由审计师自行选择决定

75. The goods are optional, but only one.

这些物品是可以任选的, 但只能选一个.《简明英汉词典》

76. There is a tour guide throughout the trip who will organize optional dinners and sightseeing.

有一位全程导游，可安排非强制性的进餐和观光。《柯林斯英汉双解大词典》

77. Establishing system of optional courses of sports in institutes and universities

高校体育课程建立学生选课制的实践研究

78. This step is actually optional.

这个步骤实际上是可选的。

79. An Optional Model of Portfolio Investment with Fuzzy-Coefficient

具有模糊系数的证券组合投资选择模型

80. In the new curriculum, some courses are compulsory, while others are optional for middle school students.

在新课程中，一些课程是必修课，而另一些是中学生的选修课。

81. There are a range of optional units available depending upon work role and work setting.

有一系列的可选单元可根据工作的职责和工作设置而定.《期刊摘选》

82. In other FIDIC documents, this was more of an optional provision.

在其它的FIDIC合同文件中, 这是一个可选择的条款.《期刊摘选》

83. Optional extras include cooking classes at a top restaurant.

可选的额外之物包括一家高级餐馆的烹饪课程。《柯林斯英汉双解大词典》

84. By setting Peking Opera as an optional course, students may have more freedom to decide whether to take it or not.

通过将京剧设置为选修课，学生们可以有更多的自由决定是否选修京剧。

85. The Research of Problems of PE Optional Course in the General University

对普通高校体育课选项过程中若干问题的研究

86. The Innovation and Practice of Optional Course of Modern Educational Technology

现代教育技术公选课的改革与实践

87. Is that optional course as hard as everybody says?

那门选修课真像大家说的那么难吗？

88. We have some optional subjects.

我们有一些选修科目。

89. Attendance at the lecture is optional.

这一讲座可随意参加.《现代英汉综合大词典》

90. It is said that in England death is pressing, in Canada inevitable and in California optional.

据说，在英国死亡是迫在眉睫的，在加拿大死亡是不可避免的，在加州是可以选择的。

实用例句

1. Legal also has crab cakes, shrimp and lots of other optional stuff you can add.

FORBES: Mail Order Meals -- My Favorites

2. In fact, by sharing your opinions, you demonstrate to others that buy-in is optional.

FORBES: Check Your Opinions At The Door

3. Planning your own hike, including overnight stays and optional bus rides between points, is easy.

BBC: Walking the new Wales coastal path

4. The car can be charged via a standard 120-volt outlet or an optional 240-volt quick-charging station.

FORBES: Ford C-MAX Hybrid/Energi

5. The IdeaCentre A730 features an optional high-resolution display (2, 560 x 1, 440) measuring 27 inches diagonal.

FORBES: Lenovo Announces New Line of Windows 8 Touchscreen Laptops

6. Google jumped on board quickly, rolling out optional 2-step verification for its users.

FORBES: How Do We Deal With Data Breaches?

7. All of these vehicles already include thousands of dollars of standard and optional safety features.

FORBES: But how will Google profit?

8. The boat trip is an optional extra.

坐小船游玩是可选的付费项目。

9. However, the QCA said 35% of schools were already presenting the subjects as optional.

BBC: NEWS | UK | Education | Language teaching 'too boring'

10. French is optional at this school.

在这所学校，法语是选修课。

11. These are completely optional, not required for the course, so there's no obligation for you guys to get involved in these things, but I'll mention these things as we go along in case anybody would like to get involved in working with professors or graduate students.

这些都是自愿选择的,而不是课程要求,所以并不强制你们都参加,但随着课程的进行,我还会不断提及,便于任何感兴趣的同学,能够与教授或研究生一同参与研究关于食物的心理学、生物学和政治学课程节选 : 耶鲁公开课

12. Still, it will be light and thin by laptop standards, even with its optional keyboard cover.

FORBES: Microsoft's Future Looks Grim

13. a comprehensive range of optional accessories

种类丰富的可选配件

14. One third said that free food at meetings would prompt them to attend optional meetings.

FORBES: Motivation By Mouth: Does Free Food Make For A Happier Workplace?

15. Canonical provides optional commercial support for Ubuntu 12.04 LTS in the form of Ubuntu Advantage.

ENGADGET: Ubuntu 12.04 LTS Precise Pangolin hits the web, with HUD in tow

16. It runs Jelly Bean with an optional interface that mimics a feature phone's home screen.

ENGADGET

17. There were 12 lectures, 6 of which were added that were optional lectures.

共有12节课，其中6节是,补充的选修课。媒体、教育、市场课程节选 : 麻省理工公开课

18. Things that might have been optional in the past for job seekers are now mandatory.

VOA : standard.2010.07.28

19. Optional Blu-ray and TV Tuner make Pulse a phenomenal option for enjoyment in the living room.

ENGADGET: Maingear introduces eco-friendly, Ion-powered Pulse SFF PC

20. Some thought the products were not optional, the bureau said, or that the products were free.

FORBES: What's In Your Wallet? If It's a Capital One Card, You May Be Due a Refund

21. So I'm not suggesting that it's an optional problem set that you shouldn't do.

一个可做可不做的问题集,因为不做它你会后悔的。计算机科学及编程导论课程节选 : 麻省理工公开课

22. The company just announced the Inspiron 15z, a 15-inch notebook with an optional touchscreen.

ENGADGET: Dell unveils Inspiron 15z Ultrabook with optional touchscreen, prices start at $750

23. This is especially useful when using the camera with an optional viewfinder (sold separately).

ENGADGET: Sony's Cyber-shot RX1 compact camera packs a full-frame sensor, 'fits in your palm' (hands-on)

24. You have a freewill offering--just because someone wants to do this, a freewill offering. And you have a vow offering that would be offered on the successful completion of a vow, for example. And these sacrifices are all entirely optional.

自由祭品--只因为有人想这么干，自由祭品，还有一个誓言祭品,举个例子，一个誓言如果成功达成，便会供奉祭品，这些祭品都是可选择的。旧约导论课程节选 : 耶鲁公开课

25. For sportier handling, there is an optional "Euro-tuned" suspension that makes the car more responsive.

FORBES: Test Drives

26. In addition, offering optional Gobi2000 and WiMAX will improve the mobile connectivity experience for our customers.

ENGADGET: Panasonic Toughbook 19 gets Core i5 grunt to match its grizzled visage

27. I want to just go over the requirements of the course that really are required, not the optional piece, just so that you understand what my purpose is pedagogically.

我只想跟大家回顾一下,这门课程的必须要求，并非可以自由选择的,这样你们会理解我的目的何在。1945年后的美国小说课程节选 : 耶鲁公开课

28. The tablet will also have an optional dock that includes a traditional phone and USB ports.

FORBES: Cisco Launches A Business-Focused iPad: The Cius

29. All of these apps offer optional alerts for major weather events, such as approaching rainstorms.

BBC: The best weather apps for travellers

30. So, in terms of practicing this weekend, I mentioned that instead of getting a problem-set today, what I am going to be posting is optional extra problems.

而对于这周的练习，我曾经说过今天将不会布置作业，但是会布置一些额外的习题。化学原理课程节选 : 麻省理工公开课

31. We should also adopt a 15% optional flat tax, and abolish the death tax.

FORBES: Magazine Article

32. There are optional co-op only missions, but beyond that your solo experience is truly solo.

FORBES: Connect

33. With this Escape, you'll feel like a real pirate of the Caribbean - eye patch optional.

BBC: Daily deal: Utopian panoramas in Costa Rica

34. Subsequent premiums over the 10 years of the policy are optional and investments are guaranteed.

FORBES: Micro-insurance: A Macro Innovation

35. So the library books are all optional background.

所以图书馆内的书,都是可供选择的背景资料金融市场课程节选 : 耶鲁公开课

36. Optional extras include cooking tuition at a top restaurant.

可选的额外项目包括在一家顶级餐厅学习烹饪。

37. "When it's an optional regulation, it's not that big of a deal, " Gradante said.

FORBES: Hedge Fund Clients: A Loyal Group

38. When you read a book you don't have a number of optional pathways through the chapters.

BBC: Metal Gear Solid 2: Your views

39. The company hopes one day to make money by offering users optional fee-based services from others.

WSJ: A Free Service to Store Medical Data in Case of an Emergency

40. The optional courses are to be conducted in English, according to Scuba Schools International (SSI) methodology.

UNESCO: Reminder - Call for Applications: Advanced Underwater Archaeology Course 2012 (Deadline: 3 August 2012) | United Nations Educational, Scientific and Cultural Organization

41. They do have interviews when you apply, but they're optional.

当你申请的时候，他们确实会进行面试。不过也是选择性的。SpeakingMax英语口语达人 : 被学问的自由所迷住

42. So they're optional, but they're very, very, very highly encouraged that you do these, because this is going to give you practice for the types of problems that are going to be on the exam.

虽然它们是选做的，但是它们非常非常，非常值得你们去做，因为这对你们来说是一次训练,是用来熟悉考试题型的。化学原理课程节选 : 麻省理工公开课

43. Attendance at Columbia Business School's daylong, optional orientation for international students suggests he is right.

WSJ: B-Schools Try to Make Transition Smoother for International Students