The study also noted a sharp decrease in underground water levels around Lake Tuz.

这项研究还指出，图兹湖周围的地下水位急剧下降。

And it has been used to measure underground water levels and predict weather in the country.

它还被用来测量地下水位和预测该国的天气。

If you keep doing that long enough—if you pump as much water out as naturally comes in—gradually the underground water levels drop.

如果我们继续长期这样做——抽取同自然流入的水量一样多的水——逐渐地地下水水位就会下降。