Then you can record the time of pumping every day.

然后，监测人员可以记录每天泵的运行时间。

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But just pumping in more money may be a waste of time.

但一味地投入更多资金可能也是浪费时间。

youdao

But just pumping in more money may be a waste of time.

但一味地投入更多资金可能也是浪费时间。

youdao