1·Wetlands have a big effect on groundwater, the amount of water below the surface of the land.
湿地对地下水，即地表以下的水量影响很大。
2·It is known that the distribution of groundwater is uneven, and that much of it lies at great depths.
大家知道，地下水的分布是不均匀的，而且它们大部分都埋在很深的地方。
3·Research from the exhaustive study of groundwater from over 950 drilling logs has just been published.
从950多篇钻井日志中产出的对地下水问题的详尽研究刚刚发表。
4·Over millions of years, groundwater left deposits of a mineral called calcite, on the rock within Devil's Hole.
在数百万年的时间里，地下水在魔鬼洞内的岩石上留下了一种叫做方解石的矿物质沉积物。
5·In addition, new coffee-growing techniques are poisoning the water locally, and eventually the world's groundwater.
此外，新的咖啡种植技术会污染当地水源，最终会影响到全球的地下水。