微生物 wēishēngwù microorganism Origin Definitions Defs Strokes Stroke Words Sentences Sents 微生物学 wēishēngwùxué microbiology 微生物学家 wēishēngwùxuéjiā microbiologist 原核细胞型微生物 yuánhéxìbāoxíngwēishēngwù prokaryotic microorganism prokaryotic cell type microorganism