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。

youdao

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。

youdao