名词
中文翻译：发票
同义词：
['invoice', 'receipt', 'purchase order']
例句：
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1.We need to purchase the necessary materials forour project.
我们需要购买项目所需的材料。
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2. Thecompany issued a purchase invoice for the goodswe ordered.
公司为我们订购的商品开具了采购发票。
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3. The customer received the purchase invoiceand paid the amount due.
客户收到了采购发票并支付了应付金额。