Cost an arm and a leg
花了很多钱
My wife is overspending. She loves to spend my money.
我妻子太能花钱了。她特别喜欢花我的钱！
I needed to get a second mortgage.
我得做二次抵押了。
It will cost you a lot of money.
这会花很多钱。
It will cost you a fortune.
这会花很多钱。
It will cost you a mint.
这会花很多钱。
It will cost you an arm and a leg.
这会花很多钱。

counterfeit
赝品
Counterfeit dollar bills
假钞
Counterfeiter
伪造者