It is not required nor enforced.

它并不是要求或者强制的。

youdao

The reply message is not required.

回复消息不是必需的。

youdao

This behavior is not required, however.

然而，这些动作不是必需的。

youdao

The Food and Drug Administration is not required to follow the advice of its committees, but generally does.

VOA: special.2009.07.21

And knowledge of French or anything at all about France is not required in this class at all.

这门课并不需要,法语和法国方面的知识

耶鲁公开课 - 1871年后的法国课程节选

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。

耶鲁公开课 - 1945年后的美国小说课程节选

The company is not required to pay the student or even provide housing or transportation assistance.

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But leadership is not required to make a reform plan, only to implement it.

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With Model 3, the social interaction is not required and the process is the main focus.

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