When you got very close to the ground, you could see an entire community of creatures that you never knew existed.
当你靠近地面，你看到了你从没看到过的一个庞大的生物世界。
There are a lot of solution holes, fissures, pipes and caves of different sizes and shapes existed in the karst rock mass to form under- ground space.
喀斯特化岩体中存在着大小不等、形状各异的溶孔、溶隙、溶洞和管道构成的地下空间。
There existed close relationship between ground water depth and precipitation (the correlation coefficient 0. 9036).
降水与潜水埋深有密切关系，相关系数达0.9036；
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