I must have been insane to agree to the idea.

我肯定是犯傻了，居然同意了这个想法。

《牛津词典》

He must be insane to drive so fast.

他把车开得这么快，一定是疯了。

youdao

But it isn't insane to call Apple's stores Meccas.

但是回过头来看，将苹果商店比作麦加也并不疯狂。

youdao

One reason for this was that he did not want people to know that his mother was in a hospital for insane people.

VOA: special.2010.06.13

It doesn't really make it any better that you're also going to give amnesia and drive insane somebody else.

这完全不会让我觉得好些,即便你说你要给别人洗脑，把她逼疯。

耶鲁公开课 - 死亡课程节选

There are stories, horrible stories, some in the twentieth century, about children who are locked away by insane or evil parents and have never learned to speak.

有一些很可怕的故事,其中的一些讲述的是在二十世纪里,被精神失常或邪恶的父母锁起来的儿童,他们不曾学会说话

耶鲁公开课 - 心理学导论课程节选

And anyone who has children would be insane to go for non-traditional employment over big business or government work.

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The reader would not be insane to question how this relative upstart could hope to score against long-time incumbents Qualcomm and Texas Instruments.

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Like they would be insane to give up their benefits.

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