1·And if such a weak layer sits in the middle of the snow pack, it becomes an avalanche waiting to happen.
如果这种疏松层位于积雪的中部，雪崩便很容易被触发。
2·Fresh snow can melt and re-freeze within the snow pack and it's this change of structure that can lead to an avalanche.
新下的雪可以在积雪中融化再凝固，这种结构上的变化会引起雪崩。
3·Pack the interior snow well.
把室内的积雪包好。
4·Snow Transformation Pack overhauls the Windows interface to look like OS X.
白雪转换包对Windows界面进行彻底检修来使它看起来像OS X。