| 1. | Water is composed of hydrogen and oxygen . 水由氢与氧化合而成。 |
| 2. | Nuclei are composed of protons and neutrons . 原子核是由质子和中子构成的。 |
| 3. | Water is composed of hydrogen and oxygen . 水是由氢和氧组成。 |
| 4. | Water is composed of the elements hydrogen and oxygen . 水是由氢、氧元素组成的。 |
| 5. | This tissue is composed of stellate reticular cells . 此组织由星形的网状细胞组成。 |
| 6. | Each disaccharide is composed of two monosaccharides . 每一种双糖都是由两个单糖组成。 |
| 7. | Gunpowder is composed of sulfur, carbon, and potassium nitrate . 火药是由硫、碳和硝酸钾组成。 |
| 8. | A polysaccharide is composed of three or more monosaccharides . 多糖是由三个以上的单糖所组成的。 |
| 9. | Each element is composed of identical atoms of a single kind . 每种元素由单一种类的相同原子组成。 |
| 10. | A trimetrogon strip is composed of three rows of overlapping . 三镜头摄影航线为三排重迭的象片所组成。 |