| 单词 | halogen |
| 释义 | noun | adjective halogenhalogen1 /ˈhælədʒən/ noun [uncountable] science, chemistry one of a group of five simple chemical substances that make compounds easily. They are: chlorine, fluorine, iodine, bromine, and astatine. noun | adjective halogenhalogen2 adjective a halogen lamp/light/bulb etc. a type of lamp or light bulb that uses halogen gas to produce light |
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