名词
中文翻译：硬币兑换机
同义词：
['coin machine', 'coin changer machine']
例句：
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1.The coin changer at the bank is very efficient.
银行里的硬币兑换机非常高效。
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2.The coin changer was out of order when I arrived.
我到的时候，硬币兑换机出了故障。
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3. The coin changer has been replaced by a new one.
硬币兑换机已经被新的取代了。