Arccosecant
un. 反余割
🗣️ 情景例句
I'm afraid I'll be tied up tomorrow at ten.
恐怕明天上午10点我很忙。
What's the price of that electric iron?
那个电熨斗的价格是多少？
The workmen struggled fiercely and one of them lost his temper.
两个工人奋力抗争，其中一个发了火，