carbon dioxide
noun [ U ] uk/ˌkɑː.bən daɪˈɒk.saɪd/ us/ˌkɑːr.bən daɪˈɑːk.saɪd/ (symbol CO2)
B2 二氧化碳
the gas formed when carbon is burned, or when people or animals breathe out
carbon dioxide emissions 二氧化碳排放
- More examples
- Plants absorb carbon dioxide during photosynthesis.
- A molecule of carbon dioxide (CO2) has one carbon atom and two oxygen atoms.
- Microbes decompose organic waste into a mixture of methane and carbon dioxide.
- The increased use of natural gas will help reduce carbon dioxide emissions.
- There has been a sudden and worrying rise in the level of carbon dioxide in the atmosphere.