oxygen

noun

1. 氧；氧气
   a chemical element. Oxygen is a gas that is present in air and water and is necessary for people, animals and plants to live.

1. N-UNCOUNT 氧；氧气
   Oxygen is a colourless gas that exists in large quantities in the air. All plants and animals need oxygen in order to live.
   1. The human brain needs to be without oxygen for only four minutes before permanent damage occurs.
      人的大脑缺氧4分钟后便会造成永久性损伤。

1. Carbon, hydrogen and oxygen combine chemically to form carbohydrates and fats
   碳、氢、氧化合形成碳水化合物和脂肪。
2. If all the coronary arteries are free of significant obstructions, all parts of the heart will receive equal amounts of oxygen.
   如果所有的冠状动脉均没有较大的阻塞物，心脏各部分将得到等量的氧气。
3. Plants and trees filter carbon dioxide out of the air and produce oxygen.
   花草树木会过滤掉空气中的二氧化碳并制造氧气。
4. Smoking and drinking interfere with your body's ability to process oxygen.
   抽烟与酗酒有碍身体处理氧气的能力。
5. Blood is the medium in which oxygen is carried to all parts of the body
   血液是将氧气输送到人体各个部位的媒介。
6. If headaches only occur at night, lack of fresh air and oxygen is often the cause
   如果只是在晚上头疼，那常常是由于缺乏新鲜空气和氧气的缘故。
7. Atoms of iron in the nail combine with atoms of oxygen from the air to form molecules of iron oxide, or rust.
   钉子里的铁原子与空气中的氧原子结合后形成氧化铁分子，也就是锈。
8. The human brain needs to be without oxygen for only four minutes before permanent damage occurs.
   人的大脑缺氧4分钟后便会造成永久性损伤。
9. He had the presence of mind to put his emergency oxygen tube in his mouth.
   他镇定自若地把应急输氧管放进了自己的嘴里。
10. Supplementary oxygen is rarely needed in pressurized aircraft
    密封的飞机内很少需要补充氧气。
11. Ozone is produced by the reaction between oxygen and ultraviolet light
    臭氧由氧气和紫外线发生反应而产生。
12. Ozone is a highly reactive form of oxygen gas.
    臭氧是一种非常活跃的氧气形态。
13. The brain requires a constant supply of oxygen
    大脑需要持续供氧。
14. All the cells and tissues in the body benefit from the increased intake of oxygen.
    体内所有的细胞与组织都从增加的氧气吸入量中受益。
15. The drug increases the number of red cells in the blood, enhancing oxygen uptake by 10 percent.
    这种药增加了血液里的红细胞数量，从而将摄氧量提高了10%。
16. It is 2,300 metres above sea level, so a given volume of air contains only about one-third as much oxygen as it would at sea level
    这是在海拔2,300米的高空，因此一定体积空气的含氧量只有海平面处的约1/3。
17. Water is a compound containing the elements hydrogen and oxygen.
    水是含有氢元素和氧元素的化合物。
18. Water can be resolved [ decomposed] into hydrogen and oxygen.
    水可分解为氢和氧。
19. The explosive mixture in a rocket consists of both a fuel and a supply of oxygen.
    火箭中的爆炸性混合物由燃料和氧气构成。
20. Water contains hydrogen and oxygen.
    水含有氢和氧。
21. Water is composed of hydrogen and oxygen.
    水由氢与氧化合而成。
22. Hydrogen combines chemically with oxygen to form water.
    氢和氧化合成为水。
23. Water is made up of atoms of hydrogen and oxygen.
    水由氢和氧的原子构成。
24. Oxygen is one of the basic elements of substance.
    氧是物质的基本元素之一。
25. Oxygen will exert a chemical action on metals.
    氧会对金属产生化学作用。
26. Oxygen is vital to life.
    氧是生命所必不可少的。
27. Hydrogen and oxygen are the constituents of water.
    氢和氧是水的主要成分。
28. Qualitative analysis shows that water is made up of hydrogen and oxygen.
    定性分析表明水是由氢氧结合而成的。
29. No living things can live without oxygen.
    没有氧生物就无法生存。
30. Among other reagents used have been titanousion, a mixture of ferrous ion, oxygen, ascorbic acid, and ethylenetetraaminetetraacetic acid.
    使用过的其它试剂有亚钛离子、亚铁离子氧，抗坏血酸和乙四胺四乙酸混合物。

noun

1. a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas

   Synonym:    Oatomic number 8