Ech
abbr. echelon 梯形，梯次编队
🗣️ 情景例句
Think no more of it.
别再想它了。
I'm afraid that won't be possible,much as we'd like to.
尽管我们很想这样做，但恐怕不行了。
Captain Alison will set out at eight o'clock, so we'll have plenty of time.
艾利森船长将于8点钟启航，因此我们有充裕的时间。