Higher harmonics
[电] 高谐波
🧩 词语组成解析
[经] 上扬
n. 乐音学
🗣️ 情景例句
That must be Nat.
一定是Nat。
While we were having breakfast,John was talking on the telephone.
当我们正在吃早餐时，约翰正在打电话。
Yes, it is.
是的。