Research from the exhaustive study of groundwater from over 950 drilling logs has just been published.
2018年12月四级真题（第一套）阅读 Section C
英语六级真题
They lack water-storing structures, and their existence on rock faces prevents them from tapping groundwater, so they have instead developed the ability to change their metabolism.
2018年6月六级真题（第一套）阅读 Section B
柯林斯高阶英汉双解学习词典释义
N-UNCOUNT
地下水
Groundwater is water that is found under the ground. Groundwater has usually passed down through the soil and become trapped by rocks.