Ech
abbr. echelon 梯形，梯次编队
🗣️ 情景例句
My great-grandmother made that quilt
我曾祖母缝好了这个被罩。
I am old enough to make up my own mind.
我已经长大了，可以自己拿主意了。
Are they from Australia?
他们是来自澳大利亚吗？