Groundwater is the word used to describe water that saturates the ground, filling all the available spaces.

地下水这个词描述的是水浸透土地，并填充所有可利用的空间。

youdao

A massive oak claims its ground for 200 years or more, outcompeting all other would-be canopy trees by casting a dense shade and drawing up any free water in the soil.

200年或更久的时间里，一棵巨大的橡树占据了它的土地，投下浓密的树荫，吸收土壤中所有自由水分，打败了所有其他可能成为树冠的树木。

youdao

At first thought it seems incredible that there can be enough space in the "solid" ground underfoot to hold all this water.

乍一想，似乎难以置信的是，在脚下的“坚实”地面上居然有足够的空间来容纳这么多的水。

youdao

Also, once the natural gas is sold overseas and almost all the ground water in North Carolina is poisoned, then the residents will be dependent on buying water at any price forever to stay alive.

FORBES: Don't sign the wrong fracking petition

You know lighting tap water, polluting ground water and all the rest.

FORBES: How The UK Government Has Decided To Kill Fracking For Shale Gas

So, to explain contango, lets find some common ground where we can all relate: buying jugs of water at the supermarket.

FORBES: You Say Contango, I Say Problemo