bacterium

复数：bacteria  

n.

1.细菌〔单数不常用〕

2.气杆菌属

3.微生物

1 . Every living cell, even the simplest bacterium, teems with molecular contraptions that would be the envy of any nanotechnologist.
地球上所有活细胞（包括最简单的细菌）都充满精巧的分子装置，足以让任何一位奈米科学家嫉妒。

2 . The empty cell membrane of the bacterium may separate off, like the hull of a seed, leaving the spore as a free. round or oval body.
此细菌的空细胞膜象种子壳一样可被分离掉，留下呈圆形或蛋形散粒物的芽孢。

3 . The Mtb genome is not the only new source of data able to provide insight into the TB bacterium's potential vulnerabilities.
结核分枝杆菌基因组不是唯一能提供细菌潜在弱点的新来源。

4 . It had thousands more genes and proteins than any bacterium, despite sharing other features, like the genetic code.
尽管共享其他特征如遗传密码，它具有成千上万的基因和蛋白质，大大超过任何细菌。

5 . but it would be of less practical importance, since that something would be very primitive compared even with a bacterium.
但却不会有更多的实际意义，因为这种生命甚至会比细菌更原始。