名词短语
中文翻译：第一估计法
同义词：
['first estimation', 'second estimation']
例句：
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1. The first estimate of the project's cost was $2 million.
该项目成本的第一估计是200万美元。
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2. The second estimate for the project's completion date was June 30th.
项目完成日期的第二估计是6月30日。
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3. The second estimate was higher than the first one.
第二估计比第一估计高。