为了得到水，挖掘井时，必须向下一直到挖到地下水位。

In order to provide water, a well must be dug down to the water table.

youdao

为了得到水，挖掘井时，必须向下一直到挖到地下水位。

In order to provide water, a well must be dug down to the water table.

youdao