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1·The cave narrowed after a while, but we were able to continue through a narrow gap by crawling into a water-filled fissure in the rock.

爬了不久，山洞变得越来越窄，爬过一条满是水的岩石裂缝，穿过狭窄的山口，我们得以继续前行。

2·The reservoir Spaces include pore, cave and fissure.

储集空间有孔、洞、缝。

3·The footwall was marble, whose cave and fissure were well developed and strong permeability and mine was impacted by the private mining for a long term.

下盘为大理岩，溶洞裂隙较发育，透水性较强，矿山长期受民采影响。