名词
中文翻译：Unknown
同义词：
['trade', 'swap', 'deal', 'transaction', 'bargain', 'barter']
例句：
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1. They exchanged their old books for new ones.
他们用旧书换了新书。
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2. The company exchanges its shares with other companies.
公司与其他公司交换股份。
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3. He exchanged pleasantries with the waiter.
他与服务员寒暄。