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/