1950s. From phut-phut + -y, perhaps after Hindi phaṭphaṭī moped, lit. ‘making the sound phaṭphaṭ’.
英语词典包含243303条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。