Cách sử dụng
"Set off" means to start a journey or to begin doing something. For example, if you are going on a trip, you can say "I'm going to set off on my journey tomorrow morning." It can also refer to triggering something, such as setting off a fire alarm or a bomb. In addition, "set off" can mean to make something stand out or to enhance its appearance, such as wearing a necklace that sets off your outfit.