这是没有主句只有从句的句子吗

问题描述

But perhaps not for long, as the fascinating city steps onto the world stage.

这句话正确吗? 好像没有主句，只有从属连词引导的句子。谢谢回答。

老师答疑

陈老师：

But perhaps not for long, as the fascinating city steps onto the world stage.

=But perhaps （it is） not for long as the fascinating city steps onto the world stage.

参考译文：但是也许不用太久这座迷人的/ 使人神魂颠倒的城市就会登上世界舞台。