Permafrost and thick rock will ensure that even without electricity, the genetic material stored in the vault will remain frozen and protected.

永久冻土和坚厚的岩层将确保遗传材料即使在没电的情况下保持冰冻状态并得到保护。

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On Mars, subrosion is widely observed when rising magma heats frozen ground water, which melts and removes subsurface material as it flows away.

在火星上，当深处上升熔岩加热融化地下水冰时，基底侵蚀非常常见，因为这些地下水会流失，带走地下物质。

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Once frozen, the material was placed in a freeze-dryer that removed all the water from it over the course of four days.

一旦冷冻，把材料放在冷冻干燥器里四天，除去水分。

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A comet is a huge ball of frozen gas and dust that often releases a long trail of material as it nears the sun.

VOA: special.2009.09.30

Once frozen, the material was placed in a freeze-dryer that removed all the water from it over the course of four days.

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They even exhumed the bodies of flu victims buried in the permanently frozen ground of the Norwegian island of Spitzbergen, in the hope that traces of virus genetic material might have been preserved.

BBC: Flu virus victims list from 1918