First, the solid ice on the surface could have been annealed, meaning that its temperature could have been raised above the 78 Kelvin mark to allow the amorphous ice to recrystallize.
，表面的固体冰曾经退火过，也就是说其温度曾升高至78K以上使无定型冰
新结晶。
First, the solid ice on the surface could have been annealed, meaning that its temperature could have been raised above the 78 Kelvin mark to allow the amorphous ice to recrystallize.
，表面的固体冰曾经退火过，也就是说其温度曾升高至78K以上使无定型冰新结晶。
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