由于可降低人的免疫力的任何东西，例如艾滋病毒、年龄增长或某些医学病症，细菌变为活动性。

Bacteria become active as a result of anything that can reduce the person's immunity, such as HIV, advancing age, or some medical conditions.

youdao

不过睡眠不足会对健康带来许多不利影响，因为它会降低人体的免疫力。 这也许就是这两天你出现溃疡和喉咙痛等症状的原因。

But the kack of skeep wikk cause kots of probkems because it reduces the body immunity, that's probabky why you are having canker and sore throat.

youdao