Echelons
n. （机构中的）等级, 阶层( echelon的复数形式 ); （军舰、士兵、飞机等的）梯形编队
🗣️ 情景例句
A murder occurred last night in this very district.
就在这个区昨晚发生了一起凶杀案。
Better is the neighbour's hen than mine.
人莫知其苗之硕。
During his lifetime, he acted in 13 films, and he wrote, directed and acted in 69 other films.
他一生演了13部电影，而且自编、自导和自演了另外69部电影。