It's an abbreviation for Escherichia coli, the name of a bacteria.

它是该细菌的名字，是杆菌的。

E.coli is short for Escherichia coli. It is a kind of bacterium that is normally harmless.

E.coli是Escherichia coli的。杆菌是一种细菌，通常情下对人体是无害的。

In fact, Staph saprophyticus is the second most common cause of UTI after Escherichia coli.

实际上，腐生葡萄球菌是杆菌之后导致尿路感染的次常见病原菌。

Escherichia coli are bacteria found in the environment.

杆菌是在环境中发现的细菌。

Using genetic engineering, the team managed to persuade a different bacterium-Escherichia coli, a ubiquitous critter that is a workhorse of biotechnology-to manufacture this protein in bulk.

并采用基因工程技术设法让另一种细菌——杆菌来批量生产这种蛋白质，而杆菌在生物体内普遍存在，是生物工程中的常用" 苦力" 。