hydrogen
/'haidrәdʒәn/
高考四级六级考研托福雅思常用词汇
BNC词频: #5,200
当代词频: #5,103
中文释义
n. 氢
[化] 氢H-2
英文释义
n. a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe