oxygen

名词 oxygen:

1. a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust
   同义词：O, atomic number 8

1. Water contains hydrogen and oxygen.
   水含有氢和氧。
2. Oxygen masks are used in aircraft only in emergencies.
   飞机上的氧气面具只用於紧急情况。
3. Hydrogen and oxygen are gases.
   氢和氧是气体。
4. Fish take in oxygen through their gills.
   鱼通过鳃摄取氧气。
5. Water is composed of hydrogen and oxygen.
   水由氢和氧组成。
6. Plants can absorb carbon dioxide and release oxygen.
   植物可以吸收二氧化碳释放氧气。
7. There was a shortage of oxygen at the top of the mountain.
   山顶上缺氧。
8. She died from lack of oxygen.
   她因缺氧而死。

ox.y.gen

n.Symbol O （名词）符号 O
A nonmetallic element constituting 2 percent of the atmosphere by volume that occurs as a diatomic gas, O2, and in many compounds such as water and iron ore. It combines with most elements, is essential for plant and animal respiration, and is required for nearly all combustion. Atomic number 8; atomic weight 5.9994; melting point -28.4=C; boiling point -83.0=C; gas density at 0=C .429 grams per liter; valence 2. See table at element
氧：一种非金属元素，按体积算占空气的2%，它是一种双原子气体O2，存在于许多化合物如水和铁矿物中。它与许多元素化合，对植物和动物呼吸是根本必需的，几乎所有的燃烧都要求有氧。原子序数是8；原子量是5.9994；熔点是-28.4=C；沸点是-83.0=C；气体密度是0=C时一升为.429克； 原子价是2 参见 element

来源：
French oxygène
法语 oxygène
Greek oxus [sharp, acid] * see ak-
希腊语 oxus [尖的，酸的] *参见 ak-
French -gène [-gen]
法语 -gène [后缀，表示.被生成.，.生成的.]

【引伸】
ox.ygen.ic
ox.ygen.ically
adv.（副词）
oxyg.enous