Higher harmonics
[电] 高谐波
🧩 词语组成解析
[经] 上扬
n. 乐音学
🗣️ 情景例句
Don't move! Get down on the floor.
别动！趴到地上！
I ought to go right away.
我应该立刻去。
I'm calling about mistake on our last invoice.
我打电话来，是因为上回的发票有错。