名词
中文翻译：交换
同义词：
['trade', 'swap', 'transact例句：1. The two countries have been exchanging ideas on trade policies.（这两个国家一直在就贸易政策进行交流。）']
例句：
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1. The two countries have been exchanging ideas on trade policies.
这两个国家一直在就贸易政策进行交流。
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2. She exchanged her old watch for a new one.
她用她的旧手表换了一个新手表。
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3.They exchanged pleasantries before the meeting began.
会议开始前，他们进行了友好的寒暄。