Endoconch
内壳
🗣️ 情景例句
I know.
我知道。
My brother wants to learn how to play the piano.
我的兄弟要去学弹钢琴。
Please sign a copy of our Sales Contract No.156 enclosed here in duplicate and return to us for our file.
请会签第156号销售合同一式两份中的一份，将它寄回我方存档。