机体已经没有了免疫能力，所以一旦艾滋病病毒侵入，人体的这种良好防御系统便会受到破坏，病原体及微生物就会乘虚而入。

The body has no immunity, so as soon as invasive HIV, the human body a good defense system would be destroyed, and microbial pathogens will take advantage of.

youdao

机体已经没有了免疫能力，所以一旦艾滋病病毒侵入，人体的这种良好防御系统便会受到破坏，病原体及微生物就会乘虚而入。

The body has no immunity, so as soon as invasive HIV, the human body a good defense system would be destroyed, and microbial pathogens will take advantage of.

youdao