Cách sử dụng
The expression "be on a roll" means to be experiencing a positive streak of success or good luck in a particular task or activity. It can be used when someone is successfully achieving their goals repeatedly or when they are experiencing a positive outcome in a series. For example, if a student has been getting good grades on their tests for several weeks in a row, their teacher might say, "You're on a roll! Keep up the good work!" Another example might be if a sports team has won several games in a row, a commentator might say, "This team is on a roll! They're playing really well right now." Overall, "be on a roll" is used to describe when someone is experiencing a prolonged period of success or good luck in a particular area.