Cách sử dụng
The word 'perturbation' means a small or temporary change in something that usually stays constant. For example, if you are driving on a smooth road and you hit a bump or a pothole, that is a perturbation. Scientists also use the word to describe a small disturbance in a system or process that can cause it to act differently. Overall, it is a word that is mostly used in scientific and technical contexts, and not in everyday conversation.