Water seeps through sand.

水渗入沙中。

《新英汉大辞典》

When you add water to sand, the mixture turned into almost a gel.

当你往砂子当中加水时，混合物几乎变成凝胶。

youdao

Dry sand absorbs water.

干沙吸收水分。

《新英汉大辞典》

They drill down to the shale, then go sideways and inject high-pressure water, sand or other material into the rock.

VOA: special.2009.10.23

And I was out there and the only place you could really get water, except for a few drinking fountains, were from the Evian booths and it talks on-- sand o three fifty for a bottle of water, which is pretty typical of these places, but what was interesting was the fact that this is shipped in from France.

我也去看了,除了几个饮水机之外,唯一可以喝到水的地方,就是依云矿泉水的摊位,而它的一瓶水要3.5美元,这种地方通常都是这个价,但有意思的是,这是由法国进口的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Water in the sand between the two pots evaporates through the surface of the larger pot, where drier outside air is moving.

VOA: special.2009.02.09

The process involves extracting gas from rocks by pumping in sand, water and chemicals.

BBC: Gas-fired power stations to be encouraged by government

Fracking involves drilling horizontally into the rock, forcing sand and water underground to cause tiny fractures that release gas from the shale.

BBC: NI shale gas deposits 'could be worth ?80bn' says report

It extracts oil from the ground using a method called fracking - pumping down a mixture of sand, water and chemicals at high pressure.

BBC: US to become 'world's biggest oil producer'