Cofunctor
上函子, 反变函子
🗣️ 情景例句
I think so. Yes. They get along so well.
我也觉得是这样。是的 ，他们相处得很好。
Stop being so indecisive!
别再婆婆妈妈了！
Thus the rods, by falling, and by the direction in which they fell,
木棒倒下的多少和倒下的方向