medium的复数及用法

问题描述

查词典，medium 的意义并不多，但它的用法比较麻烦，用起来总好像没有把握，请老师讲解一下，谢谢！

老师答疑

波老师：

以下内容是《柯林斯Cobuild高阶英汉双解学习词典》对medium的用法解释，说得很清楚：

The plural of the noun can be either mediums or media for meanings 4 and 5. The form mediums is the plural for meaning 6. 义项4和义项5的复数形式为 mediums 或 media。义项6的复数形式是 mediums。

1. 形容词。中等的;中间的;中号的：

A medium dose produces severe nausea within hours. 中等剂量几小时之内会引发严重的恶心。

He was of medium height with blond hair and light blue eyes. 他中等身材，金发碧眼。

2. 形容词。中间的;平均的：

Foods that contain only medium levels of sodium are bread, cakes, milk, butter and margarine. 含钠量仅为中等水平的食物有面包、蛋糕、牛奶、黄油和人造黄油。

...a sweetish, medium-strength beer 中度甜啤酒

3. 与颜色词构成的词。(颜色)不深不浅的，适中的：

Andrea has medium brown hair, grey eyes and very pale skin. 安德烈娅有着深浅适中的棕发、灰色的眼睛和十分白皙的皮肤。

When violet is added to the medium blue a particularly striking, warm coloration is created. 在中蓝色中加入蓝紫色就形成了一种格外鲜艳夺目的暖色。

4. (表现)方式；(交流)手段：

In Sierra Leone, English is used as the medium of instruction for all primary education. 在塞拉利昂，基础教育阶段全部用英语授课。

But Artaud was increasingly dissatisfied with film as a medium. 但是阿尔托对电影这种表现方式越来越不满。

5. 媒介;介质;媒介物：

Blood is the medium in which oxygen is carried to all parts of the body. 血液是将氧气输送到人体各个部位的媒介。

Hyatt has found a way of creating these qualities using the more permanent medium of oil paint. 海厄特已经找到产生这些特性的方法，那就是利用油彩这种更加持久的材料。

6. (自称能够在死者与生者之间传递信息的)巫师，灵媒