[mass noun]anxiety; mental uneasiness 不安,烦恼 she sensed her friend's perturbation. 她感觉到她的朋友心绪不宁。 ■[count noun]a cause of such anxiety or uneasiness 不安(或烦恼)的缘由 Frank's atheism was more than a perturbation to Michael. 弗兰克的无神论使得迈克尔非常不安。
a deviation of a system, moving object, or process from its regular or normal state of path, caused by an outside influence 搅乱,紊乱,扰乱 some minor perturbation in his house's cash flow. 他家中资金流动的某种小混乱。 ■(Physics)a slight alteration of a physical system, for example of the electrons in an atom, caused by a secondary influence (物理)微扰 ■(Astronomy)a minor deviation in the course of a celestial body, caused by the attraction of a neighbouring body (天文)摄动
语源
late Middle English: from Latin perturbatio(n-), from the verb perturbare 'disturb greatly' (see perturb)