Water is made of oxygen and hydrogen.
水是由氧和氢组成的。
Hydrogen is the lightest element in the universe.
氢是宇宙中最轻的元素。
We need hydrogen for various industrial processes.
我们需要氢用于各种工业过程。
This balloon is filled with hydrogen.
这个气球充满了氢。
Hydrogen can be used as a clean fuel.
氢可以用作清洁燃料。
Stars produce energy by fusing hydrogen.
恒星通过融合氢来产生能量。
Liquid hydrogen is extremely cold.
液态氢极其寒冷。
Electrolysis can separate water into oxygen and hydrogen.
电解可以将水分解成氧和氢。
Hydrogen is highly flammable and explosive.
氢高度易燃且爆炸性强。
Scientists are researching hydrogen fuel cells.
科学家们正在研究氢燃料电池。
hydrogen peroxide
过氧化氢；双氧化氢
hydrogen bond
氢键
hydrogen sulphide
硫化氢
hydrogen cyanide
氰化氢
hydrogen bomb
氢弹
复数: hydrogens;
