exchange 和replace的区别?因某些原因客户要求退换,请问使用exchange表达还是用replace或者return表达?

exchange for与replace with的区别 exchange 和replace的区别?因某些原因客户要求退换,请问使用exchange表达还是用replace或者return表达? exchange for 和 exchange off 的区别exchange of supersede和replace的区别? change 和 exchange 的区别 请问replace by和replace with的区别是什么? change和exchange的区别例：I'll exchange the dollars ____ pounds.(change/exchange) currency rate和exchange rate的区别 exchange student 和exchange program的 译文 请问change和exchange的区别是什么啊? swap,change和exchange在用法上的区别. 英语两个短语的区别,replace with replace as vb 中 replace 与 replace$ 的区别replace函数后面加一个$有什么区别呢? transform change exchange的区别 in exchange of和in exchange for有何区别? 请问 venture exchange 和 stock exchange 有很么区别啊? replace 和 substitute 区别是什么啊? 请问两个的区别: weather prediction和weather forecast,money exchange和exchange rate?这两个是用在酒店的指示牌,想问问weather prediction和weather forecast,money exchange和exchange rate,也就是 天气预报牌 和 外币兑换