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
What made you decide to change job?
是什么使你决定更换工作？
I asked him to come with me , but he wouldn't.
我请他和我一起来，但是他不肯。
It has belonged to our family for a long time.
我们家有这件乐器已经很久了，