Cách sử dụng
The expression "a big cheese" is used to describe someone who is important or influential. It's often used in a casual or informal setting to refer to someone who has a lot of power or authority. For example, if someone is the CEO of a company or a well-known politician, they might be referred to as "a big cheese." It's not a formal term, so it's more likely to be used in conversation than in professional or academic writing.