impulseim•pulse /'ɪmpʌls/

n C,U

1. 冲动；刺激；突然的欲望

• impulse buying 不自禁的购物，冲动购买

• I had an impulse to go out for a walk. 我突然想出去走走。

2. 推动；冲动；推动作用

• the impulse of curiosity 好奇心的驱使

3. 脉冲

• an electrical impulse 电脉冲

词组on impulse 一时冲动地

• She had bought the skirt on impulse but now she did not like it. 她一时冲动买了那条裙子，但现在又不喜欢了。