ozoneKK [ˋoˏzon] /ˈoʊˌzoʊn/名詞1臭氧化學Ozone in the upper atmosphere blocks harmful ultraviolet rays.高層大氣中的臭氧能阻擋有害的紫外線。2清新空氣口語、舊式We walked along the cliffs breathing in the ozone.我們沿著懸崖散步,呼吸海邊的清新空氣。