exchange program是什么?

exchange program是什么? student exchange program是什么意思 exchange student 和exchange program的 译文 my student exchange program 什么意思 exchange program 前加哪个介词 Imagine that you and Sally are on a student exchange program 翻译下啊 exchange program division program 是什么 program 的意思是什么? charity program是什么? exchange exchange Exchange exchange student的意思是什么 securities and exchange commission是什么 exchange traded notes中文是什么? Exchange是什么?有哪些功能? could you provide me with some information about student exchange program? I am having a good time__my exchange program in Francre.A in Bon