微小生物(microorganism简称microbe)是包括细菌、病毒、真菌以及一些小型的原生动物等在内的一大类生物群体，它个体微小，却与人类生活密切相关。微生物在自然界中可谓“无处不在，无处不有”，涵盖了有益有害的众多种类，广泛涉及健康、医药、工农业、环保等诸多领域。
它们取代了其他微小生物，并成为了主要海洋食物链的食物来源。
They replaced other minute organisms as a food source in the major marine food chain.
洋面和海面附近的浮动或被动漂浮的微小生物。
Minute organisms that float or drift passively near the surface of oceans and seas.
数十亿被称为珊瑚虫的微小生物组成及够造出这种珊瑚结构。
This reef structure is composed of and built by billions of tiny organisms, known as coralpolyps.
应用推荐