Word: 细菌 (xìjūn)

垃圾堆里容易滋生细菌。

Lājīduī lǐ róngyì zīshēng xìjūn.

Bacteria easily breed in piles of rubbish.

天气暖和了，细菌就容易繁殖。

Tiānqì nuǎnhuole, xìjūn jiù róngyì fánzhí.

When the weather gets warm, bacteria multiply easily.

手机如同马桶一样被细菌污染。

Shǒujī rútóng mǎtǒng yíyàng bèi xìjūn wūrǎn.

A cell phone is as contaminated with bacteria as a toilet is.

细菌能把垃圾分解成肥料。

Xìjūn néng bǎ lājī fēnjiě chéng féiliào.

Bacteria can break garbage down into fertilizer.

这种细菌的数量每天都会倍增。

Zhèzhǒng xìjūn de shùliàng měitiān dōu huì bèizēng.

The number of these bacteria multiplies several times over every day.