If it is compromised,then the bees could not defend themselves against pesticide products, fungal infections, bacteria or poor nutrition.

VOA: special.2009.09.22

So, not just a spectrum of viruses, but there's viruses and bacteria and parasites and other microorganisms that can cause disease.

所以,不是只有病毒,还有病毒,细菌,寄生虫,和其它各种微生物都能导致疾病

耶鲁公开课 - 生物医学工程探索课程节选

Bacteria, or simple organisms, are not always capable of that.

细菌,或者简单有机体,就不能做到

耶鲁公开课 - 生物医学工程探索课程节选

I'm not going to talk about them in detail but please look at that to remind yourself of those kinds of specialized sub-cellular units which are present in cells in humans but not present in bacteria.

我就不再赘述了,不过请你们看看书,回忆一下哪些特化的亚细胞结构单元,是人类细胞有,而细菌没有的

耶鲁公开课 - 生物医学工程探索课程节选