Cofunctor
上函子, 反变函子
🗣️ 情景例句
I owe you an apology for what I did last night.
我应该为昨天晚上的事向你道歉。
Some of them are mine.
一部分是我的。
but the means of escape from holiday hell(if the beach proves too crowded, the local weather too inclement)
而且也是逃离假日地狱（如海滩太挤，当地天气恶劣）的方便工具，