二氧化碳

èryǎnghuàtàn

carbon dioxide CO2

noun HSK 3.0 · Band 6

Watch it being written

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二
氧
化
碳

Build with these blocks

Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.

二
化

See it in sentences

植物吸收二氧化碳。

Plants absorb carbon dioxide.

二氧化碳是一种气体。

Carbon dioxide is a kind of gas.