| 1. | Water is composed of hydrogen and oxygen . 水由氢与氧化合而成。 |
| 2. | Water is composed of hydrogen and oxygen . 水是由氢和氧组成。 |
| 3. | Water is composed of hydrogen and oxygen 水由氢和氧化合而成。 |
| 4. | Water is composed of hydrogen and oxygen 水是由氢和氧组成的。 |
| 5. | Water is composed of hydrogen and oxygen 水由氢和氧化合而成 |
| 6. | Water is composed of hydrogen and oxygen 水由氢和氧组成。 |
| 7. | Water is compose of hydrogen and oxygen 水由氢和氧组成 |
| 8. | The fact that water is composed of hydrogen and oxygen is undeniable 水是由氢和氧化合而成这一事实是无可否认的。 |