Arccotangent
un. 反余切
🗣️ 情景例句
He reads the headlines, news sections, amusemenu section, sports pages, editorials, and the business section.
他读头条、新闻版、娱乐版、体育版、社会和经济版。
What is he doing?
他做什么事？
As for the unfortunate people who can command everything they want,
至于那些能任意支配一切的可怜的人"，