exchange for 和 exchange off 的区别

exchange for 和 exchange off 的区别 exchange to和exchange for有什么区别 in exchange of和in exchange for有何区别? change和exchange的区别 change 和 exchange 的区别 exchange 和 interchange 的区别 exchange 和replace的区别? exchange for与replace with的区别 Bill of exchange上的exchange for exchange和change区别 exchange student 和exchange program的 译文 change和exchange是什么区别?