Echelon
01
에셜론, 에셜론 회절 격자
a diffraction grating consisting of a pile of plates of equal thickness arranged stepwise with a constant offset
02
대열, 대열 형성
a diagonal formation of things, especially used in military troops
03
계층, 수준
a level or rank in an organization, profession, or society, indicating a person's status or authority within that hierarchy
예시들
His promotion moved him into the top echelon of academic researchers in his field.
그의 승진은 그를 그의 분야의 학술 연구자들 중 최상위 계층으로 이동시켰다.
