Cách sử dụng
The word 'redouble' means to increase something, usually an effort or intensity, to a higher level. It can be used in any situation where you want to show that you are putting in more effort than before. For example, you can say, "I need to redouble my efforts if I want to pass this exam" or "Let's redouble our efforts to raise more money for charity." It can also mean to repeat an action or task. For instance, "The teacher asked the student to redouble his efforts after he failed the test" or "She had to redouble her cleaning efforts after the party."