名词
中文翻译：苔原
同义词：
['iceland', 'polar', 'permafrost']
例句：
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1.The tundra is a vast expanse of frozen ground in the Arctic.
苔原是北极的一片广阔的冻土地带。
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2. The tundra is home to many species of animals that are adapted to survive in extreme cold.
苔原是许多适应极端寒冷生存的动物的家园。
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3.The tundra is an important habitat for polar bears and other wildlife.
苔原是北极熊和其他野生动物的重要栖息地。