
cost sb an arm and a leg:to cost sb a lot of money (使)花一大筆錢
This ring cost me an arm and a leg.
我為這戒指花了一大筆錢.
Cost an arm and a leg表示"耗資不菲,付出過高代價",這僅僅是一個簡單的比喻而已,用失去人體四肢中的"兩肢"來比喻"付出昂貴代價".
overcharge:to make somebody pay too much for something 多收(某人的)錢 verb ~ (sb) (for sth)
Make sure they don't overcharge you for the drinks. 注意別讓他們多收飲料費.
We were overcharged by £5. 我們讓人家多收了 5 英鎊.