英语语法分析

These aquifers became saturated more than 10,000 years ago and are no longer being recharged.

这些含水层在一万多年前就饱和了，现在不再重新补充水分了。

Sandstones generally make good aquifers, while finer-grained mudstones are typically impermeable.

砂岩通常是良好的含水层，而细粒泥岩通常是不透水的。

Water does not remain immobile in an aquifer but can seep out at springs or leak into other aquifers.

水在含水层中并不是静止不动的，而是会从泉水中渗出，或渗入其他含水层。