布地柯博士认为，北冰洋不冻才是“正常”情况。
Dr. Budyko argues that at ice-free Arctic Ocean is the "normal" situation.
布地柯博士认为，北冰洋不冻才是“正常”情况。
Dr. Budyko argues that at ice -free arctic ocean is the "normal" situation.
西伯利亚的贝加尔湖是世界上最深的湖——超过1，700米——令人难以置信地拥有地球上20%的不冻淡水。
Siberia's Lake Baikal is the deepest lake in the world—at over a mile (1,700 meters)—and holds an incredible 20 percent of Earth's unfrozen fresh water.
西伯利亚的贝加尔湖是世界上最深的湖——超过1，700米——令人难以置信地拥有地球上20%的不冻淡水。
Siberia's Lake Baikal is the deepest lake in the world—at over a mile (1,700 meters)—and holds an incredible 20 percent of Earth's unfrozen fresh water.
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