/ˈoʊ.zoʊn/
Ozone is a colourless gas which is a form of oxygen. There is a layer of ozone high above the Earth’s surface, that protects us from harmful radiation from the sun. 臭氧
例：
What they find could provide clues to what might happen worldwide if ozone depletion continues.
如果臭氧的损耗继续下去，他们的发现能为全世界可能发生的情况提供线索。