Cách sử dụng
The expression "my lips are sealed" is used when someone has information that they promise not to share. It means that they will not reveal the information, even if they are asked about it. It is often used in situations where secrecy is important, such as when a friend confides in you about a secret or when someone tells you something that they don't want others to know about. Essentially, it means that you can trust this person to keep your secret safe.