n. the act of applying force suddenly
n. 冲动, 驱使, 刺激, 推动, 冲力, 建议, 脉冲
vt. 推动
1. She bought the dress on impulse without thinking twice.
她毫不犹豫地冲动购买了那条裙子。
2. His sudden impulse to travel led him to book a flight.
他突然的旅行冲动让他订了机票。
3. It's important to control your impulses when shopping.
在购物时控制自己的冲动是很重要的。