Oxygen has high reactivity.

氧的反应性很高。

All life depends ultimately on oxygen.

一切生命归根到底都要依赖氧气。

Plants absorb oxygen.

植物吸收氧气。

Fish take in oxygen through their gills.

鱼用鳃吸取氧气。

Hydrogen and oxygen combine to form water.

氢与氧化合成水。

Hydrogen combines with oxygen to form water.

氢与氧化合成水。

Ozone is a highly reactive form of oxygen gas.

臭氧是一种高度活跃的氧气形态。

The brain requires a constant supply of oxygen.

大脑需要持续的供氧。

A stroke can disrupt the supply of oxygen to the brain.

中风可导致大脑供氧中断。

She was muzzled with an oxygen mask and tethered to an IV.

她被戴上了氧气面罩并输上了静脉点滴。

Burning fossil fuels uses oxygen and produces carbon dioxide.

燃烧化石燃料消耗氧气并产生二氧化碳。

A lack of oxygen may inhibit brain development in the unborn child.

缺氧可能阻碍胎儿的大脑发育。

Ozone is produced by the reaction between oxygen and ultraviolet light.

臭氧是氧气与紫外线发生化学反应而产生的。

Smoking and drinking interfere with your body's ability to process oxygen.

吸烟和喝酒妨碍身体对氧的吸收能力。

A molecule of water consists of two atoms of hydrogen and one atom of oxygen.

水分子由两个氢原子和一个氧原子构成。

If headaches only occur at night, lack of fresh air and oxygen is often the cause.

如果头痛只发生在晚上，缺少新鲜空气和氧气常常是其原因。

Two atoms of hydrogen combine with one atom of oxygen to form a molecule of water.

两个氢原子和一个氧原子结合组成一个水分子。

The drug increases the number of red cells in the blood, enhancing oxygen uptake by 10 percent.

这种药增加血液里的红细胞数量，将氧气吸收量提高百分之十。

If all the coronary arteries are free of significant obstructions, all parts of the heart will receive equal amounts of oxygen.

如果冠状动脉没有重大堵塞，心脏的各个部位会收到等量的氧气。

Oxygen is part of the air we breathe.

氧气是我们呼吸的空气的一部分。

Water contains hydrogen and oxygen.

水含有氢和氧。

Water is composed of hydrogen and oxygen.

水由氢与氧化合而成。

Several chemicals have displaced the oxygen.

有几种化学物质取代了氧气。

Without oxygen, the brain is damaged quickly.

没有氧气，大脑很快就会受损。

You breathe less when you sleep, so you get less oxygen.

你睡觉时呼吸更少，所以你得到的氧气更少。

Rain-soaked soil contains less oxygen than does drier soil.

雨水浸透的土壤比干燥的土壤含氧量少。

The higher one climbs, the less oxygen there is in the air.

爬得越高，空气中的氧气就越少。

Water can be resolved [decomposed] into hydrogen and oxygen.

水可分解为氢和氧。

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。

Water is a compound containing the elements of hydrogen and oxygen.

水是含有氢元素和氧元素的化合物。