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HSK
7-9

carbon dioxide

Character Composition


Characters

Pinyin

er4yang3hua4tan4 èryǎnghuàtàn

Meaning


Primary

carbon dioxide

Alternatives

CO2

Mnemonic


If you take 二 two 氧 oxygen atoms and connect them to a 碳 carbon atom, they will 化 transform into 二氧化碳 carbon dioxide.

Usage


二氧化碳 排放

carbon dioxide emissions

人类 呼出 二氧化碳。

Humans exhale carbon dioxide.