名词
中文翻译：交换
同义词：
['trade', 'swap', 'transact', 'deal例句：1. They exchangedpleasantries with each other before the meetingbegan.（会议开始前，他们互相问候。）']
例句：
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1. They exchangedpleasantries with each other before the meetingbegan.
会议开始前，他们互相问候。
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2.The company exchanges its shares on astock exchange.
该公司的股票在证券交易所上进行交易。
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3. The two countries have been exchangingdiplomatic notes for several years.
两国已经交换了几年的外交照会。