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词汇 impulse
释义
impulseim·pulse /ˈɪmpʌls /

noun

[countable]
  1. a sudden desire to do something without thinking about the results冲动;一时的念头She felt a terrible impulse to steal something.她产生了想偷东西的可怕念头。
  1. a single push or signal in a nerve, wire, etc. that causes a reaction冲击;冲量electrical impulses电脉冲
on impulsewithout thinking or planning冲动地;未加思索地I just bought this cake on impulse when I saw it in the store.我在商店里看到这个蛋糕时,想都没想就买了。
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