Cách sử dụng
The word 'mainspring' refers to a very important thing that drives something forward or makes it work. It is often used in a mechanical sense, like in a clock, where the mainspring is the part that powers the movement of the hands. However, it can also be used in a more general sense, like in describing a person's motivation or drive. You might say that someone's love of music is the mainspring behind their decision to become a musician. So, 'mainspring' is a useful word to describe the thing that is the driving force behind something else.