noun
exchange
/iks'tʃeindʒ/
exchange 是什么意思
交换，交换机，汇兑，交易
Chemical process in which one atom or ion or group changes places with another a mutual expression of views (especially an unpleasant one) the act of changing one thing for another thing the act of giving something in return for something received.
词性
noun
难度
进阶
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