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
If there's anything you need while you're in town, just let me know.
你在镇上有什么需要，就告诉我吧。
According to the regulations, sir, you'll have to reimburse the bank for the amount paid.
根据规定，先生，您应该补偿银行付的那笔款了。
Hello! What's your name?
你好！你叫什么名字？