This ring cost me an arm and a leg.

这个戒指花了我一半家当.

This furniture cost me an arm and a leg .

这件家具花了我一大笔钱。

The nigh horse cost me an arm and a leg.

我为左边那匹马花了一大笔钱。

Her pearl necklace cost me an arm and a leg.

她的珍珠项链花了我一大笔钱.

My new car cost me an arm and a leg but I love it.

虽然我花高价买下这辆车，但是我非常喜欢。

So my new car was really expensive. How expensive, it cost me an arm and a leg, a lot of money.

因此我的车非常昂贵。有多贵呢，我出了高价，花了非常多的钱。