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
n. 氢
[化] 氢H-2
1. Hydrogen is the most abundant element in the universe.
氢是宇宙中最丰富的元素。
2. Water is made up of two hydrogen atoms and one oxygen atom.
水由两个氢原子和一个氧原子组成。
3. Hydrogen fuel cells can produce electricity for cars.
氢燃料电池可以为汽车提供电力。