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。

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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。

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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。

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