忽冷忽热的英文

是说气候还是说人际关系呢？那么， 他对人总是忽冷忽热的。His attitude towards others is always changing或者有短语：be neither close nor distant; maintain a lukewarm relationship; keep somebody at arm's length（之前加上I feel）

忽冷忽热有雾霾英文:1)Dramaticalchangeinweatherleadstohaze.2)Hazeresultsfromsuddenchangebetweenhotandcoldweather.

sometimes hot and sometimes cold这是字面意思。不过可以用 还有其他形态的 。不局限这一个。

sometimes hot and sometimes cold; blow hot and cold in turn; by fits and stars; Fever alternates with chills 均是。人际关系：(interpersonal) relationship

sometimeshotandsometimescold

by fits and startsAs you may know that most people in China learn English by fits and starts. 正如你所知道的，中国大多数人学习英语都是忽冷忽热。 cruelly and kindly Keep sb in a state of uncertain expectation, treating him alternately cruelly and kindly 对某人时好时坏、忽冷忽热