名词
中文翻译：Unknown
同义词：
['starting capital', 'initial investment', 'preliminary payment']
例句：
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1.The company plans to invest $50 million in its new product line.
该公司计划投资5000万美元在其新产品线上。
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2. The project requires an initial lump sum of $100,000.
该项目需要一笔初始的一次性付款，总额为100,000美元。
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3. The investor received a lump sum payment for the successful sale of shares.
投资者因成功出售股份而收到一笔一次性付款。