Cách sử dụng
"Key to" is often used to explain something that is very important in achieving a specific goal. For example, if you want to be successful in your career, hard work is key to achieving that success. It can also be used to describe the most important element in a situation. For instance, communication is key to a healthy relationship. So, whenever you hear someone say "key to", it means that they are emphasizing the importance of something to achieve success or overcome a specific challenge.