exchange 
英 [ɪksˈtʃeɪndʒ]  美 [ɪksˈtʃeɪndʒ] 
n. 交换，互换，交流；兑换，汇率；交易所

v. 交换，互换；交流；兑换

例句：
Miss Grant and I exchanged smiles. 

格兰特小姐和我相视一笑。

The two men exchanged greetings. 

他们两人互相打招呼。

We exchanged a few words. 

我们互相聊了几句。

The two sides exchanged artillery, rocket and machine-gun fire for several hours. 

双方用大炮、火箭弹和机枪持续交火数小时。

The two men exchanged blows. 

两个男人互殴起来。

They had already exchanged contracts on a new property. 

他们已经就一处新房产交换了合同。

We arrived just in time to see the couple exchange vows and rings. 

我们到得很及时，刚好看到这对新婚夫妇交换誓言和戒指。