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Cecily G. 讲师的专栏

idiom: "to cost an arm and a leg"

2015年8月25日

English idioms sound strange sometimes! There is an idiom "to cost an arm and a leg". It means something is very expensive. For example, "we could stay in a hotel in Tokyo but that would cost an arm and a leg, so we will try airbnb." (airbnb is an internet site where people rent out their own houses to visitors).