The inns are informal and dress-up clothes are not required for dinner.

小旅馆是非正式场所，所以就餐不需要考究的衣服。

《柯林斯英汉双解大词典》

The update is not required for this scenario.

本场景不需要该更新。

youdao

This is not required for those programs to run.

运行这些程序并不需要这样。

youdao

He says many,if not all, of the top American colleges once had a core curriculum a set of courses required for all students.

VOA: special.2009.10.22

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

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

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Normally this would be an advantage in Georgia, since, as in Ohio, party registration is not required for a primary vote.

ECONOMIST: John Edwards's campaign

Naturalisation ceremonies are bilingual, and speaking English is not required for citizenship.

ECONOMIST: Immigrants in Belize

The use of the NICS however is not required for private sales of firearms, which make up about 20% of all firearm transactions.

CNN: Background checks on gun sales: How do they work?