| 释义 |
im·pulse /`ɪmpʌls; ˈɪmpʌls/
n [C]
1 a sudden desire to do something before thinking about whether it is sensible 冲动，一时的念头:
impulse to do sth I managed to resist the impulse to hit him. 我好不容易控制住了想揍他的冲动。
on impulse (=because of an impulse) 一时冲动: I bought this dress on impulse, and I'm not sure if I like it now. 我一时冲动买下这条连衣裙，现在就不敢肯定自己是否仍然喜欢它了。
2 technical a single push or force moving for a short time in one direction along a wire or NERVE 【术语】 〔电〕脉冲; 神经冲动
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