- [uncountable] (formal)
the state of feeling anxious about something 忧虑；不安；烦恼 - [countable, uncountable] (specialist)
a small change in the quality, behaviour or movement of something 摄动；微扰；扰动；小变异 temperature perturbations 温度的些微变化
Word Originlate Middle English: from Latin perturbatio(n-), from the verb perturbare ‘disturb greatly’, from per- ‘completely’ + turbare ‘disturb’.