Cách sử dụng
The expression "go hot and cold" means to change one's attitude or behavior towards something or someone, usually in a sudden and unpredictable way. It can be used to describe someone who is initially excited about something but then suddenly loses interest, or someone who is friendly one moment and then distant the next. For example, "He seemed really into the project at first, but then he went hot and cold and didn't want to participate anymore."