Cách sử dụng
The expression "make a fast/quick buck" means to quickly make money in an easy way, often involving dishonest or deceptive practices. It is usually used in a negative context to describe someone who is only interested in making money quickly and does not care about doing things in an honest or ethical way. This expression can be used in a variety of situations, such as when someone is promoting a get-rich-quick scheme or when someone is trying to make a profit by taking advantage of others' misfortunes.