ozone

n.

1. 〈化〉臭氧
   • The ozone layer surrounding the earth protects our skin from being hurt by the ultraviolet rays.
     环绕地球的臭氧层保护着我们的皮肤免受紫外线的伤害。
2. 清新空气
   • Just breathe in the ozone on the sea.
     吸吸海上的新鲜空气吧。