Ech
abbr. echelon 梯形，梯次编队
🗣️ 情景例句
Tell me about your educational background.
告诉我你的学习背景。
I don't know where I've seen him before.
我不晓得在哪儿见过他。
Shylock must promise to leave the money upon his death to his daughter and her husband.
夏洛克必须答应在他死后把这笔财产留给他的女儿和女婿。