动词
中文翻译：交换
同义词：
['trade', 'swap', 'transact例句：1. They exchanged pleasantries with each other before the meeting began.（会议开始前，他们互相寒暄。）']
例句：
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1. They exchanged pleasantries with each other before the meeting began.
会议开始前，他们互相寒暄。
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2.The two countries have been exchanging diplomats for decades.
这两个国家几十年来一直在互派外交官。
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3. She exchanged her old clothes for a new pair of shoes.
她用她的旧衣服换了一双新鞋。