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
Does Daddy want to move?
爸爸想要搬吗？
In the evening one may praise the day.
入夜方能赞美白昼。
We must conclude from the work of those who have studied the origin of life,
我们必须从那些研究生命起源的人的工作总结出：