Spherical trigonometry
n. 球面三角学
🧩 词语组成解析
n. 三角学
🗣️ 情景例句
I'll call her back.
我给她回电话。
Everybody's business is nobody's business.
人人都管，大家不管。
It is growing cool.
天气渐渐凉爽起来。