| 1. | Red cells ferry oxygen throughout the body .
红血球将氧气运送到全身。 |
| 2. | Mars is too dry and poor in oxygen .
火星上面过于干燥，并且缺乏氧气。 |
| 3. | Mercury is too dry and poor in oxygen .
水星过于干燥并且缺乏氧气。 |
| 4. | Mars is too dry and poor in oxygen .
火星过于干燥，而且缺乏氧气。 |
| 5. | He first filled the drum with oxygen .
他首先将桶里充满氧气。 |
| 6. | The oxygen hood is a clear, sturdy dome;
氧气头盔是一个透明而牢固的圆顶帽。 |
| 7. | A steady hiss denoted that the oxygen was on .
一阵嘶嘶的声音说明氧气正在放出。 |
| 8. | Some electron donor was oxidized to yield oxygen gas .
某些电子供体被氧化产生氧气。 |
| 9. | Oxygen to support combustion is provided from a cylinder .
燃烧需要的氧气由气瓶来提供。 |
| 10. | Oxygen is often used as reactant in chemical processes .
在化学过程中，氧气经常充当为反应物。 |
