If it's illegal for someone under 21 to drink, it should be illegal for them to drink and drive. That's a no-brainer.

如果不满21岁喝酒是违法的，那他们酒后驾车也应是违法的。这太容易理解了。

《柯林斯英汉双解大词典》

Is proposal of marriage a no-brainer?

求婚是件很简单的事吗？

youdao

Download is a no-brainer if you're rocking the current stable release.

如果你正在期待目前最稳定的版本，那下载这个更新版本根本不需要思考。

youdao

It seems like a no-brainer to bring these peoples in to help Afghnastan.

把这些人引进到阿富汗看起来是非常容易的事。

普林斯顿公开课 - 国际座谈会课程节选

Yeah, I think that mandatory voting is a no-brainer. It's a dumb idea. It's a terrible idea.

我认为强制投票这事不用多考虑，是一个极其愚蠢，极其糟糕的想法。

对于义务投票制 - SpeakingMax英语口语达人

Both of these companies have done dumber things, but this just seems like a no-brainer.

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But for a certain segment of Internet users it could be a no-brainer update.

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Even the outgoing Director of Defense said it was bloated so this should be a no-brainer.

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