costs arm and a leg
代价昂贵，非常昂贵
口语·表示非常昂贵
英文释义
to be very expensive
例句
The repairs on my car costs arm and a leg, so I'm thinking of selling it.
典故来源
与cost an arm and a leg同义，省略冠词，是更口语化的变体，强调代价高昂。