fissure

This is an amazing cave that can be accessed througha fissure in the ground with a rope..这是一个非常奇妙的山洞，可以利用绳索从一个地上的裂缝进入其中。

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。

We could send a lander to drop a drilling probe through the kilometers-thick ice or attempt to find a huge fissure to access the sub-surface ocean..我们可以发射一个着陆器，向该星球投放一个有钻头的探测器，钻通其几公里厚的冰面；或者尝试去寻找一个巨大的裂缝进入地下海洋。

fissure water,裂隙水；裂缝水

anal fissure,肛裂

fissure zone,裂隙带

fissure sealant,窝沟封闭剂；齿面裂沟封剂