So if you play cat and mouse with someone,
你玩猫捉老鼠这样捉弄人的游戏
you change between different kinds of behavior when dealing with another person.
对他人总是忽冷忽热的
a child might offer something sweet to her little brother and then take it away when he reaches for it.
一个小孩说给她的小弟弟一个糖果,当她的弟弟拿到糖果时她又将糖果夺走.