Cosec
n. 余割
📖 牛津释义
cosec
abbr
缩写 = cosecant.
🗣️ 情景例句
I have always envied your good luck.
我一直羡慕你的运气好。
Which one is more expensive?
哪一个是比较贵的？
The key to a solution of that problem lay in an everyday observation.
可以从我们的日常生活观察中找到这个问题的答案。