blow hot and cold 忽冷忽热，摇摆不定

Blow hot and cold 用来形容对事物的兴趣像天气一样忽冷忽热，变化无常，或者一直改变我们的看法，摇摆不定。这个表达多与介词 on 或 about 搭配用，即 blow hot and cold on/about something。

例句

She blows hot and cold; I am not sure shes that into me.

她对我忽冷忽热，我不确定她到底爱不爱我。

You keep blowing hot and cold about going on holiday, but we need to book the tickets soon.

你一直对去度假的事情忽冷忽热的，但大家立刻就得订票了。

The manager keeps blowing hot and cold on whether to hire new staff.

这个经理一直对招聘新员工这事摇摆不定的，下不了决心。