The Arctic has experienced its warmest and wettest year on record, a long-running study by the leading US atmospheric agency has found, and the rapid melt of permafrost has caused rivers to turn orange from leached metals.
美國主要大氣機構的一項長期研究發現,北極經歷了有記錄以來最溫暖、最潮濕的一年,而且隨著永久凍土快速融化,滲出的金屬使河流變成橙色。
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