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首页英语词典halogenhalogen英英释意

halogen

英 ['hælədʒ(ə)n; 'heɪl-] 美['hælədʒən]

英英释义实用场景例句

n. [化学] 卤素

英英释意

1. any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions