英语语法分析

Most avalanches occur long before this happens.

大多数雪崩在这之前就发生了。

Too much snow, for example, can smother trees, and avalanches and snow creep can damage or destroy them.

例如，太多的雪会使树木窒息，雪崩和积雪蔓延会损坏或摧毁树木。

At present there is no way to predict or avoid such enormous avalanches, but, luckily, they are very rare.

目前还没有办法预测或避免如此巨大的雪崩，但幸运的是，它们非常罕见。