Cách sử dụng
The expression "in black and white" means that something is in written or printed form. For example, if you receive a contract with the terms and conditions written down, you can say that everything is "in black and white." This means that there is no need for further explanation because everything is clear and easy to understand. You can also use this expression when referring to a document, letter, or any other written communication that provides clear and direct information.