Cách sử dụng
Countersign is a word that means to sign a document again in front of someone else. It is usually done to confirm that the signature is genuine and to prevent forgery. For example, if you are signing a contract, the other person may ask you to countersign it in front of them. This way, they can verify that you are the person who actually signed the agreement. Countersigning is often used in official or legal settings, such as in government or business transactions.