如果一个人使用未经消毒或肮脏的切割工具——剃刀、剪刀、别针，甚至是一听汽水标签的尖锐边缘，切割可能会导致感染。
Cuts can become infected if a person USES nonsterile or dirty cutting instruments - razors, scissors, pins, or even the sharp edge of the TAB on a can of soda.
它可以成为一个强迫行为——这意味着一个人切割的次数越多，他或她越觉得需要去做。
It can become a compulsive behavior - meaning that the more a person does it, the more he or she feels the need to do it.
有些人曾假设，还有一些人则怀疑，由于水的重量和密度都更大，融水会切割近1公里的冰层，并向下渗漏。
The meltwater did indeed cut through nearly 1km of ice, as some had hypothesised and others had doubted, forcing its way down thanks to its greater weight and density.
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