今日美语俚语 - cost an arm and a leg

Idiom: cost an arm and a leg

Definition:

to cost a lot; to be very expensive

Examples:

1. That thing costs an arm and a leg.

2. Her house costs an arm and a leg.

中文解释:  http://www.youzienglish.com/main/idiom_of_the_day/to_cost_an_arm_and_a_leg/cn/