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臭氧空洞
chòu​yǎng​kōng​dòng

ozone hole

Definitions Defs Origin Strokes Stroke Words Sentences Sents
  1. 臭氧 chòu​yǎng noun
    ozone
    ozone; an allotrope of oxygen with a strong odor, often used as a bleaching agent or for disinfection
  2. 空洞 kōng​dòng noun
    cavity; hollow
    a physical cavity, void, or hole; physically empty or hollow inside