红色代表变暖的趋势：融冰期提早，封冻期后延，融冰季节变得更长。

Red indicates trends consistent with warming: earlier melt onset, later freezes, and longer total melt season.

youdao

红色代表变暖的趋势：融冰期提早，封冻期后延，融冰季节变得更长。

Red indicates trends consistent with warming: earlier melt onset, later freezes, and longer total melt season.

youdao