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Tundra Holds Frozen Ground and Migrating Life
苔原储存冻土与迁徙生命
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Tundra covers Arctic lands south of polar ice caps.苔原覆盖北极冰盖以南的陆地。
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Permafrost lies just below the surface all year long.永久冻土全年都位于地表之下。
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Summer brings short bursts of flowers, insects, and nesting birds.夏季短暂出现花朵、昆虫和筑巢鸟类。
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Caribou migrate across tundra to reach calving grounds.驯鹿迁徙穿越苔原，前往产犊地。
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Warming temperatures melt permafrost and change plant patterns.气温升高导致永久冻土融化，改变植物分布。
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This fragile zone stores huge amounts of ancient carbon.这一脆弱地带储存着巨量远古碳。