the layer of the Earth's atmosphere that contains a high concentration of ozone, which absorbs most of the sun's ultraviolet radiation

a region of marked thinning of the ozone layer in high latitudes, allowing harmful ultraviolet radiation to reach the surface of the earth

A region of the atmosphere where the concentration of ozone is significantly reduced, allowing harmful ultraviolet radiation to reach the Earth's surface; short for [[臭氧层空洞|臭氧層空洞|chou4 yang3 ceng2 kong1 dong4]]

a region of marked thinning of the ozone layer in high latitudes, especially over the Antarctic