名词
中文翻译：硬币操作
同义词：
['coin operation', 'coinage operation']
例句：
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1.The coin-op system allows for easy payment and withdrawal of funds.
硬币操作系统使得资金的支付和提取变得简单。
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2.In the coin-op system, each transaction is recorded in a database.
在硬币操作系统中，每次交易都会被记录在一个数据库中。
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3.The coin-op machine is designed to accept various forms of payment.
硬币操作机器被设计用来接受各种形式的付款。