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- Water contains hydrogen and oxygen. 水含有氢和氧。
- Sulfur can be used to make gunpowder. 硫磺可以用来制造火药。
- Water is composed of hydrogen and oxygen. 水由氢和氧组成。
- hydrogen sulfur 硫化氢
- Water is composed of the elements hydrogen and oxygen. 水是由氢元素和氧元素组成的。
- The more sulfur a person consumes, the more hydrogen sulfide is produced. 硫化物摄取得越多，硫化氢的产量也会越多。
- Water may be resolved into hydrogen and oxygen. 水可以分解为氢和氧。
- Iron and steel with too much sulfur are red-short. 含硫过多的铁和钢都是热脆性的。
- The hydrogen is the known the lightest element. 氢是已知的最轻的元素。
- Sulfur is an essential nutrient for plants. 硫是植物的一种重要的营养元素。
- Hydrogen and oxygen combine/Hydrogen combines with oxygen to form water. 氢与氧化合成水。
- A molecule of water consists of two atoms of hydrogen and one atom of oxygen. 水分子含有两个氢原子和一个氧原子。
- To eliminate sulfur from(petroleum, for example). 脱硫（例如，从石油中）除硫
- Water can be dissolved into hydrogen and oxygen. 水能分解成氢和氧。
- Both hydrogen and oxygen are elements. 氢和氧都是化学元素。
- The unionized sulfur species is ??in water. 溶于水中非电离形式的硫即?妗?/UK>
- Hydrogen is a one-valence element. 氢是一价的元素。
- Isn't sulfur important in chlorophyll formation? 硫对叶绿素的形成很重要，对吗?
- A sulfide compound containing at least two sulfur atoms per molecule. 多硫化物每个分子中至少含有两个硫原子的一种硫化物
- Water is a compound of hydrogen and oxygen. 水是氢和氧的化合物。
