by percent造句

• If etec vaccine contains colonization factor antigen such as cfa / i and cs1 - cs6 , associating with enterotoxin ( lt ) , it can , theoretically , protect the user from diarrhea by percent 80 etec attacking
  如果一个疫苗包含有定居因子抗原和lt肠毒素，则理论上可使服食者免受80的etec菌株的侵害。