Wit(s)

(n.)

quick understanding; intelligence

悟性；智慧；理解力；智力

e.g. He hadn't the wits/wit enough to realize the danger.

他悟性差，没有意识到存在的危险。

(idm.)

at one's wits end: not knowing what to do or say because of worry or desperation

智尽能索；张皇失措

e.g. I'm at my wits' end worrying about how to pay the bills.

我怎样付清这些账，完全没有主意。

e.g. When you are at your wins' end, you should not lose your head.

当你智尽能索的时候，你不应当惊慌失措。

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