我们并不孤独。或许我们会认为自己是一个独立的个体,但实际上我们是一个庞大的生物群落。我们的身体表面被由细菌、古细菌、真菌和病毒等组成的生态系统所覆盖。我们更像是远洋客轮,承载着一组独一无二的旅客,在生命之旅中航行。我们身体表面的每一处都有成千上万的细菌驻扎,消化道的表面尤其如此。从口腔开始,温暖湿润的环境中栖息着大量 We are not alone. Perhaps we will consider ourselves an independent entity, but in fact we are a huge biological community. The surface of our body is covered by an ecosystem of bacteria, archaebacteria, fungi and viruses. We are more like an ocean liner, carrying a unique group of travelers sailing through life’s journey. Thousands of bacteria reside everywhere on the surface of our body, especially on the surface of the digestive tract. Starting from the mouth, warm and humid environment, a large number of habitats