However, we often need to estimate projects before we have even started the analysis on them.

然而，通常甚至在我们开始分析项目之前，就需要对项目进行估算。

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The method is expected to produce a single estimate, usually after feasibility analysis and requirements gathering activities.

这个方法通常在可行性分析和收集需求活动以后产生单一的评估。

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By one estimate there are more than 100 programs for network analysis, also known as link analysis or predictive analysis.

估计已经有100多个用于网络分析的程序，这些程序也被称为链接分析或者推测性分析。

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The estimate is based on an analysis of official NHS data and local trust board papers.

BBC: Nurses warn of 'workforce crisis' in NHS

Based on morphological differences in the skull and bone structure, coupled with DNA analysis, the authors estimate that the Kha-Nyou diverged from other rodents millions of years ago.

BBC: Totally new to science

Obama has outspent McCain by a 2-to-1 margin in the state during the past two weeks, according to an estimate by TNSMI-Campaign Media Analysis Group, CNN's consultant on political advertising.

CNN: Battleground roundup: Can Obama win in the South?