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carbon dioxide

noun
🔊/ˌkɑːbən daɪˈɒksaɪd/
🔊/ˌkɑːrbən daɪˈɑːksaɪd/
 [uncountable]
(symbol CO2)
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  1. a gas breathed out by people and animals from the lungs or produced by burning carbon二氧化碳
    • Coke burns with oxygen to give carbon dioxide.焦碳用氧气燃烧，产生二氧化碳。
    • Trees absorb carbon dioxide and produce oxygen.树木吸收二氧化碳并产生氧气。
    Topics Physics and chemistryb2, The environmentb2
    Oxford Collocations Dictionaryverb + carbon dioxide
    • absorb
    • take in
    • emit
    • …
    carbon dioxide + noun
    • emissions
    • concentration
    • levels
    • …
    phrases
    • a build-up of carbon dioxide
    • emissions of carbon dioxide
    See full entry