The mice harbored an array of disease-causing bacteria, like shigella, Clostridium difficile, salmonella.

小老鼠体内有大量致病菌，比如志贺氏菌、艰难梭菌、沙门氏菌等。

One of the best known examples of these is the Clostridium difficile bacteria, or C.

其中最著名的例子之一是艰难梭菌， 或 C.

One of the best known examples of these is the Clostridium difficile bacteria, or C. diff for short.

其中最著名的例子之一是艰难梭菌，简称艰难梭菌。

Now remember don't use alcohol-based hand sanitizer if you have visible dirt on your hands or if you're working with a person who has Clostridium difficile or another spore producing pathogen.

对了，在如下情况时，就别用酒精类免洗洗手液了：1.当手部有肉眼可见的污渍；2.当有可能接触艰难梭菌（艰难梭菌是医疗保健相关腹泻的最常见感染性原因）或其它能产生孢子的病原微生物时。

In contrast, when a single species is dominant, it can cause problems. Take the case of Clostridium difficile, a natural part of your gut community that causes a severe inflammation of the colon when it becomes too abundant.

相反，当一个物种占主导地位时，它可能会引起问题。 以艰难梭菌为例，它是肠道群落的自然组成部分， 当它变得过多时会导致结肠严重炎症。