未煮熟的牛肉可能含有大肠杆菌，导致食物中毒。

Undercooked beef may contain ___E. coli, which can cause food poisoning.

这家餐厅因卫生问题导致多人感染了大肠杆菌。

Many people got sick with ___E. coli due to the restaurant's hygiene issues.