impulse
/ˈɪmpəls/
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n. 衝動；一時的念頭
- On an impulse, she signed up for a half marathon that was only six weeks away. 一時衝動之下，她報名了只剩六週就要舉行的半程馬拉松。
其他意思
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n. 衝動, 脈衝, 推動力
An impulse is a sudden desire to do something.
- Unable to resist the impulse, he glanced at the sea again
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adj.
An impulse buy or impulse purchase is something that you decide to buy when you see it, although you had not planned to buy it.
- The curtains were an impulse buy.
也出現在：
字根
pel, pell, puls 驅使、推
im + puls + e往內、進入 + 驅使 + —