swap

v.&n. 交换
vt. 交换,用...作交易

As you like my dress and I like yours, shall we do a swap?

既然你喜欢我的连衣裙而我也喜欢你的，咱们交换好吗？

They swapped (ie told each other) stories about their army days.

他们互相讲述了他们在军队中的经历.