你还需要准备说明你们对项目的所有重要假设言之有据。
You need to be prepared to defend and explain all important assumptions concerning your projections.
专家言之有据，较之去年假日销售速度已经减缓了7%。
Already, experts say, holiday sales are off 7 percent from last year's pace.
有时候它可能是言之有据的，特别是你的表现没有达到工作需求时。
Other times, it can be valid especially when your performance does not meet job requirements.
有时候它可能是言之有据的，特别是你的表现没有达到工作需求时。
Other times, it can be valid especially when your performance does not meet job requirements.
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