名词
中文翻译：Unknown
同义词：
['duration', 'period', "span例句：1. The project has a lead-time of six months.（这个项目的工期是六个月。）2. The delivery date is two weeks before the lead-time.（交货日期是在工期前两周。）3. The company's lead-time for this product is three months.（该公司生产这种产品的工期是三个月。）"]
例句：
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1. The project has a lead-time of six months.
这个项目的工期是六个月。
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2. The delivery date is two weeks before the lead-time.
交货日期是在工期前两周。
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3. The company's lead-time for this product is three months.
该公司生产这种产品的工期是三个月。