blow hot and cold
US /bloʊ hɑt ənd koʊld/
UK /bləʊ hɒt ənd kəʊld/
成語
忽冷忽熱, 反覆無常
to keep changing one's mind about something or someone, or to be inconsistent in one's attitude or behavior
範例:
•
He keeps blowing hot and cold about the new project, so I don't know what he really wants.
他對新項目總是忽冷忽熱，所以我不知道他到底想要什麼。
•
Their relationship is unstable because they always blow hot and cold with each other.
他們的關係不穩定，因為他們總是對彼此忽冷忽熱。