A rock avalanche, or landslide, may be partly an ice avalanche.

岩崩，或叫山崩，可能是冰崩的一部分。

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Placid ground snow awaits the crush of an avalanche descending a rock mountain face in Alaska.

阿拉斯加的岩石山上平静的积雪突然发生的雪崩。

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You’ll have the biggest impact if you can change something that will in itself cause further changes — the rock that causes the avalanche.

如果你改变的事情它自己也能造成进一步的改变，将产生最大的效果--引起许多石头崩溃的那块石头。

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"Flooding, snow, high winds, avalanche risk, slips and rock falls can all occur at any time of the year, " says Christine Officer, program manager at the DOC office in Te Anau (a two-hour bus ride from Queenstown), which manages the Milford Track.

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