Cách sử dụng
The expression "sign off" means to formally end a conversation or communication. It is often used in the context of emails, letters, or phone calls to indicate the end of the conversation or message. For example, in an email, you would typically "sign off" by saying "Best regards" or "Sincerely". In a phone conversation, you might "sign off" by saying "Goodbye" or "Talk to you later". It's important to use this expression appropriately to show professionalism and respect for the person you are communicating with.