处于严寒地带的南极大陆和周围冰冷的海洋气流，在全球气温和海洋循环方面扮演着重要角色，因此世界的天气状态也要开始变化。
World weather patterns will also start to change, as a frigid Antarctic continent and the icy ocean currents that surround it play an important role in global atmospheric and oceanic circulation.
这些动物很早就被人类驯化，对高山地带的严寒气候有很强的适应能力，它们能够在十分陡峭的石坡上觅食。
These domesticated animals are well suited to live in the extreme climatic conditions of the high mountains and are good at grazing on steep, rocky slopes.
这些动物很早就被人类驯化，对高山地带的严寒气候有很强的适应能力，它们能够在十分陡峭的石坡上觅食。
These domesticated animals are well suited to live in the extreme climatic conditions of the high mountains and are good at grazing on steep, rocky slopes.
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