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m****s
发帖数: 9 | 1 不懂了吧 :)
skier 最喜欢的slope 也是avalanche最常发生的slope. forgot the exact degree.
that is why a lot of mountain watch program manually trigger the avalache if
they believe one is going to happen. Of course they cannot prevent everything,
that is why some poeple die from avalanche every year.
describe a
avalanche.
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