n.細(xì)菌
A bacterium was identified as the cause for his duodenal ulcer. 一種細(xì)菌被斷定為造成他十二指腸潰瘍的根源。
土壤桿菌屬,土壤桿菌
n.[微]真細(xì)菌
n.蛋白質(zhì)菌
n.古生細(xì)菌
