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Thing is, that giant icicle I've just climbed up is made of frozen water,
我刚才登上的巨大冰柱，是由水冻成的
it formed this year, whereas that glacial ice up there,
是近期形成的，而在那边的冰川
formed over thousands of years in a completely different way.
数千年前就以另一种方式形成了
Glaciers are not formed from frozen water.
冰川并不是由冻水形成的
They are made from snow.
它们由雪变来
Every snowflake is formed from dozens of delicate ice crystals.
每一片雪花由几十个精巧的冰晶组成
No one has ever found two that are the same.
每人能发现有两片一样的
Individual snowflakes may be fragile
单独的雪花可能是脆弱的
but put enough together and they create one of the most awe-inspiring sights in nature.
但是聚合起来它们能创造 一个自然界中令人敬畏的景象
Every year, around a million avalanches thunder down the Earth's mountains.
每一年，地球上的山峰有百万计的雪崩
But however devastating avalanches may appear to us,
尽管破坏性的雪崩威胁我们的安全
when it comes to reshaping the Earth, they barely even scratch the surface.
但是对于重塑世界，它甚至不能破坏地球表面
When snow turns into ice,
只有当雪变成冰
it becomes so powerful it can change our world.
才具有改变世界的力量
