an area of the ozone layer (near the poles) that is seasonally depleted of ozone
The ozone hole is an annual thinning of the ozone layer over Antarctica, caused by stratospheric chlorine. Other more moderate thinnings have also been called "ozone holes", such as that over the North Pole during certain weather conditions.
例句与用法
1.
Why the ozone hole is only found in antarctica 为什麽臭氧破洞只在南极上空发现
2.
Unit 101 the ozone hole ： why over antarctica 臭氧空洞：为什么出现在南极洲上空
3.
Breaking news : antarctic ozone hole smaller this year 最新消息：南极臭氧层破洞缩小了！
4.
Antarctic ozone hole smaller this year 最新消息：南极臭氧层破洞缩小了
5.
Oh , oh , the ozone hole is back 糟了，臭氧层的穿孔又出现了！
6.
Briefly talking about the ozone hole 浅谈臭氧层空洞
7.
Antarctic ozone hole 南极臭氧层空洞
8.
Arctic ozone hole 北极臭氧层空洞
9.
Two ozone holes 两个臭氧空洞
10.
Subjects include : antarctica , electricity , climate change , el nino , coral reefs and the ozone hole -介绍该组织，提供旅游认证评估体系和标准等资料下载。
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