Your feelings may be a little impulsive and fleeting.

你的感觉是有些冲动的，短暂的。

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There's a lot of happiness to be gained from spontaneity, impulsive adventures, and unpredictable undertakings.

在那些突出性的、不可预知的冒险中，也会体验到许多乐趣。

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He is too impulsive to be a responsible mayor.

他太容易冲动，无法成为一个可靠的市长。

《柯林斯英汉双解大词典》

Yet Mr Yeltsin had taken a momentous decision in a highly impulsive way, at a troubled time for Russia and a worrying time for a man of his health and temperament.

ECONOMIST: When Boris banged the table

Tigger is hyperactive, impulsive and a risk-taker.

WSJ: Fictional Stars, Real Problems

Monsanto has a better chart, a classical impulsive rally and once over 310.90 it will rally to 342.72.

FORBES: China Tackles Inflation. Food Prices Rising. Good For Monsanto & Syngenta.