acting or done quickly and without thought or care
冲动的,鲁莽的,性急的,急躁的
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her friend was headstrong and impetuous .她的朋友顽固而冲动。
moving forcefully or rapidly
激烈的,猛烈的,迅疾的
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an impetuous but controlled flow of water .迅疾但受控制的水流。
"late Middle English: from Old French