1、两个都可以,都是每一天的意思.
2、exchange A for B,固定搭配,没有into的用法
4、exchange用法例句1、This could intensify the risk of a nuclear exchange.这可能会加剧爆发核战争的危险。2、During the turmoil in the foreign-exchange markets the guilder remained strong.荷兰盾在外汇交易市场的动荡中保持坚挺。3、They exchange traveller's cheques at a different rate from notes.他们兑换旅行支票时依据的汇率跟兑换现钞时不同。