sudden

The sudden change in the wind direction warned the sailors that a storm was approaching.

(Chinese) 风向的突然改变警告水手们风暴正在逼近。

The engine made a loud, sudden noise before the car finally came to a complete stop.

(Chinese) 在汽车最终完全停下来之前，发动机发出了一声响亮而突然的噪音。