钱川同学
irrationality; unreason; the irrational。
双语例句：
1、这对当下而言是个巨大挑战，可能需要“非理性”的回应。
This is a grand challenge for our age and it may require an "irrational" response.
2、他们不是非理性的，或者有杀人倾向的什么人。
They're not irrational, potentially homicidal maniacs, to start。
3、就像对转基因的非理性恐惧一样，其实一般来讲，我们人类足够英明，能够快速小心地处理好这些问题。
As with hysteria about genetic modification, we humans are generally wise enough to manage these problems with speed and care.
晓旭的妈妈
关于短语,上面已经说的很详细了,不过你要是应用来写句子或作文的话,可以灵活一点,下面例句可以参考一下.1.A foolish or crazy person.愚蠢或失去理智的人2.He is blind with anger.他因发怒而失去理智。3.His resentment blinds his good sense.愤怒使他失去理智。4.One who is crazy or deranged.疯子失去理智或神经错乱的人5.We feared for her reason, ie were afraid that she might go mad.我们担心她可能失去理智。6.He completely lose his marble after the stock market crash.股票市场崩盘后他完全失去理智。7.When the fire broke out in the movie theater, the people lost their heads and ran in all directions.电影院起火的时候，大家失去理智而向四方奔逃。8.Whom God would ruin, he first deprives of reason.[谚]上帝要毁灭其人，必先使他失去理智。9.As always she has kept her head while others around her kept her head while others she has kept her head while others around her have been losing theirs.她像平时一样保持了头脑冷静，而她周围的人则已失去理智。10.A torrent of rationalizations -- some legit, some lame -- spill out of him in monologues, especially on pardons and terrorism.他在滔滔不绝地高谈阔论时,偶尔会失去理智,尤其在谈到赦免和恐怖主义问题时。
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