Authorities hunting the source of a nationwide E-coli outbreak are focusing on nine California farms after discovering what could be a crucial clue -- an opened bag of spinach left in the refrigerator of someone sickened by the bacteria.
Authorities hunting the source of a nationwide E-coli outbreak are focusing on nine California farms after discovering what could be a crucial clue -- an opened bag of spinach left in the refrigerator of someone sickened by the bacteria.
政府当局在寻找大肠杆菌全国性大爆发的起源，他们发现了一条重要线索——在某大肠杆菌感染患者的冰箱中有一袋打开的菠菜，此后当局把焦点放在九个加州农场上。