5 sentences

1. 她需要吸氧。

   tā xū​yào xī yǎng.

   She needs oxygen.

   Source: OpenSubtitles

2. 氧是维持生命必不可少的元素。

   yǎng shì wéi​chí shēng​mìng bì​bù​kě​shǎo de yuán​sù.

   Oxygen is an essential element for sustaining life.

   Source: Dong Chinese Dictionary

3. 他的大脑缺氧已经超过八分钟了。

   tā de dà​nǎo quē yǎng yǐ​jīng chāo​guò bā fēn​zhōng le.

   His brain's been oxygen-deprived for over eight minutes.

   Source: OpenSubtitles

4. 每个分子由两个氢原子和一个氧原子组成。

   měi gè fēn​zǐ yóu liǎng gè qīng​yuán​zǐ hé yī gè yǎng yuán​zǐ zǔ​chéng.

   Each molecule is composed of two hydrogen atoms and one oxygen atom.

   Source: Dong Chinese Dictionary

5. 每个水分子由两个氢原子和一个氧原子组成。

   měi gè shuǐ fēn​zǐ yóu liǎng gè qīng​yuán​zǐ hé yī gè yǎng yuán​zǐ zǔ​chéng.

   Each water molecule is composed of two hydrogen atoms and one oxygen atom.

   Source: Dong Chinese Dictionary