The nature of the nutritional requirements for obligate parasites in nature is unknown.人们还不知道自然界中专性寄生菌的营养要求的本质.All the photosynthetic bacteria possess the capability in addition to various facultative aerobes and obligat...
An obligate anaerobe can survive only in the absence of oxygen.专性厌氧生物只能在无氧条件下生存.Anaplasma ovis is an arthropod - borne rickettsial obligate parasite of sheep and goat.绵羊无浆体病是绵羊和山羊红细胞内专性寄生的由节肢动物传播的立克氏体疾病.Paul Ehrlich sees...
They ran for the culvert and ducked in.他们跑到涵洞跟前,钻了过去.He ducked his head to hide his admiration...他低下头以掩饰他的仰慕之情。He ducked in time to save his head from a blow from the poker...他及时低下头，躲过了拨火棍的击打。He had ducked the confrontat...