Spherical trigonometry
n. 球面三角学
🧩 词语组成解析
n. 三角学
🗣️ 情景例句
How are you getting on with your studies?
你功课情况如何？
Every one's faults are not written in their foreheads.
知人知面不知心。
It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash.
不久，一架直升飞机飞抵飞机失事现场，来搭救这几个幸存者。