Cofunction
n. 余函数
🗣️ 情景例句
Thank you for a most enjoyable evening.
谢谢你举办这样一个极其快乐的晚会。
Do you have some post cards?
你有明信片吗？
My old friend, Frank Halliday, is just such a person.
我的老朋友弗兰克。哈利戴正是这样一个人。