As water freezes in the upper atmosphere, small, flat, six-sided, ice crystals might be formed.

当水在上层大气中凝固，会形成细微的，扁平的，六面体形状的冰晶。

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As water freezes in the upper atmosphere, small, flat, six-sided, ice crystals might be formed.

当水在上层大气中凝固，会形成细微的，扁平的，六面体形状的冰晶。

youdao