击昏

例句：

1. 1. The sudden noise made him fall into a state of shock and hit his head on the ground, causing him to lose consciousness.
   突然的噪音使他陷入了休克状态，头部撞到地上，导致他失去了知觉。
2. 2. After the car accident, he was knocked out for several hours before regaining consciousness.
   车祸后，他昏迷了几个小时才恢复意识。
3. 3. The old man fell down and hit his head on the floor, losing consciousness for a moment.
   老人摔倒并撞到头，一时失去了知觉。