“极冷的”的英语可以翻译为：gelid ...

冻伤是危险的,一般发生在皮肤长期暴露在极冷的环境.Frostbite is damage that happens when skin is exposed to extreme cold for too long.毛猛犸(长毛象)就生活在西伯利亚极冷的环境下.For example the hardy woolly mammoths lived in the extreme cold of Siberia....