impulse broading

例句：

1. 1. The sudden impulseof the crowd caused him to run away.
   人群的突然冲动让他逃跑了。
2. 2. Thenew policy was a powerful impulse for change.
   新政策是变革的强大推动力。
3. 3. Theteam's impulsive decisioncost them dearly in the end.
   团队的冲动决定最终让他们付出了沉重的代价。