Cách sử dụng
The expression "boil up" usually refers to the process of heating a liquid, such as water or soup, until it reaches the boiling point. It can also be used to describe a situation where emotions or tensions rise quickly and intensely, such as a disagreement between two people. You might say, "The argument really boiled up between them." In general, "boil up" is a casual and informal expression that is commonly used in spoken English.