名词
中文翻译：形式发票
同义词：
['Proforma Invoice', 'Proforma Bill']
例句：
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1.The company issued a proforma invoice to the client as a preliminary draft of the final contract.
公司向客户发出了一份形式发票，作为最终合同的初步草案。
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2.The proforma invoice included all the necessary information for the project, such as budget and timeline.
形式发票包含了项目所需的所有必要信息，如预算和时间表。
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3.The client was asked to review the proforma invoice before signing the final contract.
在签署最终合同之前，客户被要求审查形式发票。