It is derived from five sources, - rains, rivers, surface-water or shallow Wells, deep Wells, and springs.

其来源有五：雨水、水、表水(浅井水)深井水和泉水。

youdao

Counterweights on the walking beam are used for shallow Wells and they can be adjusted by moving them along the beam.

在游梁上的平衡块用于浅井，并可沿游梁移动平衡块进行调整。

youdao

Fluid inertia effects increase equipment loading and reduce efficiency in high rate shallow Wells with high water production.

在含水率较高的大排量浅井中，流体的惯性效应使设备负荷增加，并降低了泵效。

youdao

He says there are shallow wells in remote areas outside of Docol, but most of the wells are now dry.

VOA: standard.2009.10.06

"All we have been able to do in this area is to rehabilitate shallow wells because of access limitation and lack of funding,".

VOA: standard.2009.10.06

The nation's capital, Harare, has not imported adequate supplies of chemicals to treat water, resulting in citizens resorting to shallow wells and rivers for water, according to health advocates.

CNN: Cholera kills 300 in battered Zimbabwe

In April 2008, I wrote about McMoRan and the vision it had for finding significant oil and gas deposits by going deeper in areas that provided significant discoveries decades ago in the Gulf area, both onshore and offshore, in shallow wells drilled years ago.

FORBES: Magazine Article

In contrast, with these ultradeep shallow water wells, Chevron is eyeing prospects that might be nearly as big as those deepwater finds.

FORBES: Chevron Makes Big Discovery In Louisiana - And It's Not Even Done Drilling Yet