传病媒介把致病微生物从一个宿主传到另一宿主的生物，如蚊子或虱蝇等 An organism, such as a mosquito or tick, that carries disease-causing microorganisms from one host to another.
微生物很小，肉眼看不见。 Microbes are too small to be seen by the naked eye.
射线杀菌法破坏某种食品，如鱼或蚌肉内的大部分微生物的行为或过程，通过γ射线或其它放射线辐射的防止变质 The act or process of destroying most microorganisms in certain foods, such as fish or clam meat, by irradiating them with gamma rays or other radiation to prevent spoilage.
有生源说，胚种论一种学说，认为来自宇宙空间的微生物或生物化学物是地球上生命的起源，并且在宇宙的其他部分可能有适合的大气状况存在 The theory that microorganisms or biochemical compounds from outer space are responsible for originating life on Earth and possibly in other parts of the universe where suitable atmospheric conditions exist.
