Diphthongia
n. [医]复音,双音
🗣️ 情景例句
A construction company. Roads, bridges, big stuff.
一家建筑公司。修路， 筑桥， 都是大工程。
This is to be my treat, so I'll pay for everything.
这次轮到我作东，所以一切由我付账。
Do l have to
非做不可吗？