名词短语
中文翻译：现金证明
同义词：
['cash receipt', 'cash voucher', 'cash certificate']
例句：
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1. Thebank issued a proof of cash for thetransaction.
银行为这笔交易出具了现金证明。
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2. The customer requested a proof of cashto verify the amount.
客户要求出具一份现金证明以验证金额。
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3. Theseller provided a proof ofcash as a guarantee for thepayment.
卖家提供了一份现金证明作为付款的担保。