音标：['haidrәdʒәn]
n. 氢
【化】 氢H-2
【医】 氢(1号元素)
在线英汉词典
hydrogen的短语、例句：
hydrogen n[U] (chemistry 化) gas that has no colour, taste or smell and is the lightest substance known, combining with oxygen to form water 氢. =>App 10 见附录10.

标签：hydrogen,用法,音标,短语