Ech
abbr. echelon 梯形，梯次编队
🗣️ 情景例句
Sure. Hand me the pen.
当然。请把笔给我。
What did you talk about?
你们谈论了什么？
Next Friday? Why, what's happening? I'm going away for the weekend.
下星期五？嗨，到底有什么事情？我要外出度周末。