999英语网 英语单词
Halogen的音标发音
Halogen
英式发音：['hld()n;'hel-] or ['hldn]
美式发音
(noun.) any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions.
整理:莫顿
