名词
中文翻译：交换
同义词：
['trade', 'swap', 'transact', 'deal', 'barter']
例句：
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1.The company exchanged its shares for new ones.
该公司用新的股票换回了旧的股票。
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2.They exchanged pleasantries with each other.
他们互相问候。
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3. Exchange rates fluctuate frequently due to economic conditions.
由于经济状况，汇率经常波动。