Hexachord
n. 六音音阶
🗣️ 情景例句
He is now involved in stocks.
他现在热衷于股票。
To wave your arms
振臂，挥手
The negotiations on the rights and obligations of the parties under contract turned out to be very successful.
就合同保方的权利和义务方面的谈判非常成功。