The origin of the idiom "an arm and leg" is uncertain, but it is believed to have become popular in the mid-20th century, possibly influenced by similar expressions that imply a significant cost or sacrifice. This phrase is used to describe something that is excessively expensive or requires a significant sacrifice in terms of cost or effort.

What is the origin of the idiom "an arm and leg" and when to use it?

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“an arm and (a) leg”的英语定义和含义

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