名詞 carbon dioxide:

1. a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis
   同義詞：CO2, carbonic acid gas

1. Synthesis of carbohydrate from carbon dioxide and water using energy obtained from the chemical oxidation of simple inorganic compounds. This form of synthesis is limited to certain bacteria and fungi.
   化學合成用簡單無機化合物的化學氧化所產(chǎn)生的能量將二氧化碳和水合成碳水化合物。這種化學合成形式只限于某些細菌和真菌
2. The carbon14 atoms oxidize to carbon dioxide which gets blown about and mixed up with lower atmosphere.
   碳14原子氧化生成二氧化碳，向四周散去并與低空的大氣混合。
3. Soft drinks contain carbon dioxide.
   軟飲料中含有二氧化碳。
4. Plants can absorb carbon dioxide and release oxygen.
   植物可以吸收二氧化碳釋放氧氣。