名词
中文翻译：交换
同义词：
['trade', 'swap', 'transact', 'commerce', 'interchange例句：1. They exchanged pleasantries with each other before the meeting.（会议前，他们彼此进行了友好的寒暄。）']
例句：
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1. They exchanged pleasantries with each other before the meeting.
会议前，他们彼此进行了友好的寒暄。
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2.The company exchanges its products for raw materials.
该公司用其产品换取原材料。
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3. Exchange rates fluctuate constantly due to fluctuations in foreign markets.
由于外国市场的波动，汇率不断变动。