C. diff causes diarrhea, and in some cases a particularly severe and sometimes lethal infection of the colon.

diff可以导致腹泻，有时情况会非常严重，并且还可能会引起致命性的结肠感染病。

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In one strain of the mice, clopidogrel curbed the amount of kidney damage, a common and sometimes lethal consequence of the disease.

在一种老鼠中，氯吡格雷控制住对肾脏的危害，而对肾脏的危害是狼疮所造成的常见后果，有时这种后果也是致命的。

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Lab studies have shown that when mosquitoes bite a person recently treated with the drug, they swallow a dose that is sometimes lethal to them.

实验室的研究已显示，当蚊子叮咬了近期接受该药治疗的人后，它们吸入的剂量有时是致命的。

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In fact, sometimes I think that in so far if there is an ethical difference, it favors the lethal injection.

其实，如果这两种方式的确有伦理上的,差别，那么伦理道德，更倾向于注射死亡。

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