n.[化]臭氧,清新空气
Every spring the ozone is chewed up, and the hole appears.
每年春天,臭氧遭到破坏,空洞就出现了。
Ozone is produced by the reaction between oxygen and ultra-violet light.
臭氧由氧气和紫外线发生反应而产生。
Ozone is a highly reactive form of oxygen gas.
臭氧是一种非常活跃的氧气形态。