Quartal
a. [音](和声)以四度音程为基础的
🗣️ 情景例句
Have a safe trip home.
路上小心点。
We also hope to expand our business with you.
我们也希望与贵公司扩大贸易往来。
When could you make a delivery?
你们什么时候可以交货啊？