to blow hot and cold
01
喜怒无常, 意见经常变化
to change one's opinions about something often and quickly, sometimes being enthusiastic and other times indifferent or negative
![to [blow] hot and cold definition and meaning](https://cdn.langeek.co/photo/22105/original/?type=jpeg "to [blow] hot and cold definition and meaning")
idiom
例子
His feelings for the project blow hot and cold, so the team is n't sure how committed he is.
她对项目态度喜怒无常，有时热情，有时漠不关心。
