The ozone layer outside the polar regions is projected to recover to pre-1980 levels by 2048, although the annual springtime ozone hole over the Antarctic is not expected to recover until 2073.

尽管每年春季出现在南极洲上空的臭氧空洞预计要到2073年才能恢复，但是极地以外地区的臭氧层预计到2048年就可以恢复到1980年以前的水平。

youdao

Thee ozone layer outside the polar regions is projected to recover to pre-1980 levels by 2048, although the annual springtime ozone hole over the Antarctic is not expected to recover until 2073.

尽管每年春季出现在南极洲上空的臭氧空洞预计要到2073年才能恢复，但是极地以外地区的臭氧层预计到2048年就可以恢复到1980年以前的水平。

youdao

The ozone layer outside the polar regions is projected to recover to pre-1980 levels by 2048, although the annual springtime ozone hole over the Antarctic is not expected to recover until 2073.

到2048年，极地地区外的臭氧层将恢复到1980年以前的水平，但每年春季出现的南极臭氧层空洞要在2073年才能得到恢复。

youdao