美国科学家称，覆盖北冰洋的冰面去年冬天继续缩减。

American scientists say ice covering the Arctic Sea continued to shrink last winter.

youdao

美国科学家称，覆盖北冰洋的冰面去年冬天继续缩减。

American scientists say ice covering the Arctic Sea continued to shrink last winter.

youdao