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...
His gross misman-agement left the company desperately in need of restructuring.他管理上的重大失误使公司陷入亟须重组的境地。Right now I'm in need of a little filial affection.此刻我需要的是一份孝心。Many of the buildings are in need of repair.许多建筑需要整...