细菌、病毒和真菌是三类不同的生物,多数个体很微小,通常称为微生物。这三类微生物与人类生活密切相关,那么,它们有什么区别和联系,我们该如何认识它们呢? 从大小看,病毒最小,只有在电子显微镜下才能看出。细菌其次,在光学显微镜下即可看到。真菌个体比细菌大,有些甚至用肉眼就可以看见。 Bacteria, viruses, and fungi are three different types of organisms. Most individuals are tiny, often called microbes. These three types of microbes are closely related to human life. So, what are their differences and connections? How do we know them? From the size, the virus is the smallest and can only be seen under the electron microscope. Bacteria, secondly, can be seen under an optical microscope. The fungal individuals are larger than the bacteria, and some can even be seen with the naked eye.