臭氧层 Traditional form: 臭氧層 Pinyin (reading): chòuyǎngcéng Definitions: ozone layer Characters: 臭 - to reek, to smell, to stink 氧 - oxygen 层 - layer, floor, story, stratum Traditional characters: 臭 - to reek, to smell, to stink 氧 - oxygen 層 - layer, floor, story, stratum