采用人工制冷技术在实验室环境下实现了封闭容器里海水表面冻结一定厚度的海冰。

Using freezer technique, it is successful in laboratory to freeze a layer of ice in a seawater tank .

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冻伤指脸部、耳朵、手指和脚趾表面组织的冻结。

Frostbite describes the freezing of superficial tissues of the face, ears, fingers and toes.

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研究者们长期以来都在争执月球表面是否有水——比如朦胧的环形山中冻结的水分。

Researchers have long argued over whether the moon contains water on its surface - frozen in shadowy craters, for instance.

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