high population短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 密集群体 A search for the source of animal infections revealed a high population of this newly discovered electron microscopic sized organism in soybean meal and corn products. 动物感染调查发现：在这些动物饲料所含的大豆和玉米中，含有大量的这种新的生物体。它们只有在电子显微镜下才能被看到。 blog.sina.com.cn