Cách sử dụng
The expression "in the background" means something that is not the main focus or attention, but still exists or happens behind the scenes. For example, when you are on a video call, your family members or pets may be in the background, meaning they are not the main focus of the call but you can still see or hear them. Another example could be background music in a movie, which exists to set the mood but is not the main focus of the scene.