名词
中文翻译：交换
同义词：
['trade', 'swap', 'transact例句：1. The two countries have been exchanging ideas about how to improve their economy.（这两个国家一直在交换意见，讨论如何改善经济。）']
例句：
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1. The two countries have been exchanging ideas about how to improve their economy.
这两个国家一直在交换意见，讨论如何改善经济。
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2. The exchange rate is the price at which one currency can be exchanged for another.
汇率是两种货币之间的兑换价格。
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3. They exchanged pleasantries before they began their business discussion.
在开始商务讨论之前，他们进行了寒暄。