音标：['hælәdʒin]
n. 卤素
【化】 卤素
【医】 卤素, 卤
在线英汉词典

halogen的短语、例句：

halogen n (chemistry 化) any of the chemical elements fluorine, chlorine, bromine and astatine which form salts by simple union with a metal 卤素
[attrib 作定语] halogen lamps/headlights 卤素灯[前灯].