名词
中文翻译：计费机
同义词：
['cash register', 'cashier', 'point of sale (POS) system']
例句：
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1. The billing machine at the store is very efficient.
商店里的收银机非常高效。
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2. The cashier scans the barcode to process the transaction.
收银员扫描条形码处理交易。
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3.The POS system allows customers to pay for their purchases with a credit card.
POS系统允许顾客用信用卡支付他们的购买。