Spherical harmonics
[电] 球函数
🧩 词语组成解析
n. 乐音学
🗣️ 情景例句
Notices are displayed on the bus asking people not to smoke.
公共汽车上张贴着请勿吸烟的公告。
It is easy to open a shop but hard to keep it always open.
开设店铺易，维持常开难。
He gets back home at a quarter past five.
15回到家。