not required

基本解释

And failures beyond those are not required.
超越那些的失效则是不要求的。
Knowledge of any of these is helpful, but not required.
了解这些当然很有帮助，但也不是必需的。
This partition is not required if your computer uses BIOS to boot.
如果您的计算机使用 BIOS 引导，则不需要这个分区。

The Food and Drug Administration is not required to follow the advice of its committees, but generally does.
I have it on reserve, but that's not required for the mid-term; it's just if you're interested in seeing it.
我将其列为推荐书目,但不作为期中考试要求,如果你们感兴趣的话可以去读一下
耶鲁公开课 - 金融市场课程节选
So, many of you are new to the Boston area, now I still realize, and I want to let you know it's not required that you be a Red Sox fan to be at MIT.
你们中很多人新来到波士顿地区，现在我仍认识到，我想让你们知道在麻省理工学院,不一定必须做一个红袜队的球迷。
麻省理工公开课 - 化学原理课程节选

Consultants are not required to meet any educational requirements or have any specialized training.
FORBES: The Politics of Fraud: How Pension Politics Enable Money Managers To Commit Fraud (July 1, 2001)