at fault 1. 出毛病,有故障;靠不住 My memory is at fault. 我想不起来了。 His theory was entirely at fault and was therefore unacceptable. 他的理论完全站不住脚,所以不能接受。 2. 感到困惑,不知所措 3. (猎犬)失去臭迹 4. 有过错,有责任 Which of the two drivers was at fault in the car crash? 这两个驾驶员在汽车碰撞事故中哪一个负有责任?