impulse词根词缀

impulse

[ˈɪmpʌls]

n.凭冲动行事;突如其来的念头;[电子]脉冲;[医]冲动，搏动;

复数： impulses

例句:

1、

After lunch she decided on impulse to take a bath.

午饭后她突然兴起，决定洗个澡。

《柯林斯高阶英汉双解学习词典》

2、

He had a sudden impulse to stand up and sing.

他突然心血来潮，想站起来歌唱。

《牛津高阶英汉双解词典》

3、

She wrote that letter on impulse.

她一时冲动写了这封信.

《简明英汉词典》

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