vibration excited by dropping weight

例句：

1. 1. The sound of the bell caused a slight vibration in the room.
   钟声在房间里引起了轻微的震动。
2. 2.The car's engine is making a lot of vibration.
   汽车发动机产生了很多震动。
3. 3.The vibrations from the earthquake were felt all over the city.
   地震引起的震动在整个城市都能感觉到。