〈非正式〉古怪;神经不正常。
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He must have a screw loose somewhere; he's acting really strangely.
他一定是哪根筋不对,他的行动真奇怪。
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Bill must have a screw loose somewhere; he's acting really strangely.
比尔肯定是哪里不对劲了,他的行为很奇怪啊。