if the air surrounding a heat-sterilized nutrient broth is bacteria-free ,then the broth remains bacteria-free .
热心网友
如果高温杀菌的营养汤周围的空气是无菌的，那么肉汤也是无菌的。BTW,我怎么觉得这句话有点Chinese-English的味道呀~~怪怪的~嘿嘿...
热心网友
broth-发酵液
热心网友
虚拟语态啊：if the air surrounding a heat-sterilized nutrient broth is （were)bacteria-free ,then the broth (would) remains bacteria-free .