biology bed微生物发酵床biologyn.生物学；(一个地区的全部)生物；生物群落biology/analysis生物学/分析biology construction生态建设biology of evolution发育生物学biology fermentation微生物发酵biology evolutionary生物进化biology immune system生物免疫系统biology effectiveness生物学效应biology of population集团生物学biology determination生物测定biology sterilization生物杀菌