Naturally, the same process applies to jobs that extract data from a single data source.
自然，这个过程也适用于从单个数据源提取数据的作业。
However, before you can perform an analysis, you need to extract and pre-process this data.
然而，在您执行分析以前，您需要提取并预处理这些数据。
However, before you can perform an analysis, you need to extract and pre-process this data.
然而，在您执行分析以前，您需要提取并预处理这些数据。
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