ozone layer
US /ˈoʊ.zoʊn ˌleɪ.ər/
UK /ˈoʊ.zoʊn ˌleɪ.ər/
1.
オゾン層
a layer in the earth's stratosphere at an altitude of about 10 km (6 miles) containing a high concentration of ozone, which absorbs most of the ultraviolet radiation reaching the earth from the sun.
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The depletion of the ozone layer is a major environmental concern.
オゾン層の破壊は主要な環境問題です。
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Scientists are monitoring the recovery of the ozone layer.
科学者たちはオゾン層の回復を監視しています。