Ech
abbr. echelon 梯形，梯次编队
🗣️ 情景例句
Oh, it was nice meeting all of you.
哦， 很高兴会见你们各位。
We should make it clear whether the damage was caused in transit or during the unloading process, or by other reasons.
我们要弄清楚货物是否在运输途中受损，还是在卸货过程中受损，或者别的原因。
In a heat wave we choose a midnight birthday party and that is the most exciting of all.
天气炎热时，我们便选择在半夜举办生日聚会，这种聚会是最令人激动的。