oxygen
英 [ˈɒksɪdʒən]
美 [ˈɑːksɪdʒən]
n. 氧; 氧气
复数：oxygens
Collins.2 / BNC.3719 / COCA.3839
牛津词典
noun
- 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.
柯林斯词典
- N-UNCOUNT 氧；氧气
Oxygenis a colourless gas that exists in large quantities in the air. All plants and animals need oxygen in order to live.- 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。
- The human brain needs to be without oxygen for only four minutes before permanent damage occurs.
英英释义
noun
- a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas
双语例句
- 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。 - Hydrogen combines chemically with oxygen to form water.
氢和氧化合成为水。 - 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。 - Water is made up of atoms of hydrogen and oxygen.
水由氢和氧的原子构成。 - No living things can live without oxygen.
没有氧生物就无法生存。 - Oxygen is vital to life.
氧是生命所必不可少的。 - 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。 - 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。 - 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。 - Water is composed of hydrogen and oxygen.
水由氢与氧化合而成。