北极是一片海洋，为漂流的冰块所覆盖，四周被欧洲，亚洲和北美洲所包围。
The Arctic is an ocean covered with drifting packed ice and hemmed in by the land masses of Europe, Asia, and North America.
北极是一片海洋，为漂流的冰块所覆盖，四周被欧洲，亚洲和北美洲所包围。
The Arctic is an ocean covered with drifting packed ice and hemmed in by the land masses of Europe, Asia, and North America.
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