| 例句 |
adjectivenoun a chemical element化学元素 the chemical industry化学工业 chemical reactions/processes化学反应／过程 a chemical toilet Chemical treatment with chlorine provides some protection against contamination. Farmers are being urged to reduce their use of chemicals and work with nature to combat pests. We don’t use many chemicals on our farm these days. chemicals discharged by industry into our lakes and rivers pollution from a big chemical plant Hormones are chemicals that are released in the body and control many important functions. This chemical is often used to make cleaning products. |