二氧化碳 | èr yǎng huà tàn | carbon dioxide CO2 | |
氧气 | yǎng qì | oxygen | |
氧化 | yǎng huà | to oxidize | |
二氧化硫 | èr yǎng huà liú | sulfur dioxide SO2 | |
臭氧 | chòu yǎng | ozone (O₃) |
1 | Oxygen is an important gas. | |
2 | We can only rely on oxygen therapy to alleviate altitude sickness. | |
3 | This chemical reaction will generate a huge amount of carbon dioxide. | |
4 | He decided to preserve the last breath of air for someone else to use. | |
5 | Green tea is rich in antioxidants and helps protect the body's health. |