Level 4 · word 4,534 of 20,000

ozone

/ˈoʊˌzoʊn/ American
  • n. 臭氧, 新鲜空气
Definition
  • n. a gas found high in the atmosphere, or fresh invigorating air
Example
Scientists study how ozone protects the earth from radiation.
科学家研究臭氧如何保护地球免受辐射伤害。