Ech
abbr. echelon 梯形，梯次编队
🗣️ 情景例句
Here, take a look at these Rolexes.
来看这几只劳力士吧！
Karl must concentrate on his work.
卡尔必须集中精力于自己的工作。
Is it in one of your pockets ?
那张纸在你的口袋里吗？