Arccosecant
un. 反余割
🗣️ 情景例句
I wonder whether I might ask you a question.
我是否可以问你一个问题？
Speaking of trips,did I ever tell you about the experience I had?
谈论旅行,我曾经把我的经验告诉你了吗？
It's hard to say.
难说。