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BNC: 10697 COCA: 9549
chlorine
noun [U] chemistry /ˈklɔːriːn/
  1. a chemical element that is a strong-smelling gas. Its symbol is Cl and it is often used for killing bacteria in water. 氯,氯气(常用于水的消毒)
     Synonyms and related words
    Gases: acetylene, ammonia, argon...
     Synonyms and related words
    Treating water: chlorine, desalination, water softener...
BNC: 10697 COCA: 9549
BNC: 10697 COCA: 9549

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