以下为句子列表：
英文: A polar bear plays on the tundra near Churchill, Manitoba, Canada.
中文: 加拿大中南部马尼托巴湖附近的一只北极熊正在冻土上玩耍。
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英文: Alpine vegetation is often similar to TUNDRA vegetation, being adapted to harsh climate conditions, including high wind speeds.
中文: 高山的植物一般与苔原植物相似，都能适应严酷的气候条件包括很高的风速。
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英文: Based on warming experiments using greenhouses, biologists have known for some time that shrubs will grow at the expense of the other tundra plants when the climate warms.
中文: 透过在温室进行的暖化实验，生物学家已经知道：当气候温暖，灌木会在苔原植物受损时取而代之。
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英文: Because of regional underground water level continual dropping and climate changing to aridity, land desertifacation and degeneration of glassland and tundra will tend to worse in short period.
中文: 由于区域地下水位的持续下降和气候向干旱化发展，土地沙化、草场退化及多年冻土退化短期内将趋于恶化。
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英文: Because of the intense cold, the subsoil of the tundra remains permanently frozen to a great depth.
中文: 由于严寒，冻土带的底层土仍然长久冷冻得很深。
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