艾滋病降低了身体的抗感染能力。

AIDS lowers the body's resistance to infection.

《牛津词典》

定向运动的六钩蚴有感染能力。

Those with oriented motion is of infectious oncosphere.

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类固醇一般是片剂，副作用包括骨骼骨质流失，创伤愈合延迟，抗感染能力下降。

Side effects of steroids may include thinning bones, poor wound healing and a decreased abillity to fight infection.

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Usually viruses have certain kinds of cells they want to infect or that they're capable of infecting.

通常病毒倾向于或者有能力,感染某些种类的细胞

耶鲁公开课 - 生物医学工程探索课程节选