Cách sử dụng
The word "echelon" means a level or rank in any organized system of authority or society. It is typically used when talking about people or things that are arranged in a hierarchical order. For example, a company may have different echelons of management, with the top echelon being the highest level. In military terms, an echelon refers to a formation of troops or vehicles arranged in a staggered pattern. The word echelon can also be used to describe a group of people who have achieved success or status in a particular field, like the echelon of top scientists in a certain discipline.