/əˈfɪʃəl ˌmɛməˈrændəm/ – Phrase
Definition: giác thư chính thức, bị vong lục chính thức.
A more thorough explanation: An official memorandum is a written communication issued by a government agency, organization, or business that conveys information, instructions, or decisions to individuals or groups within the organization. It is typically used for internal communication and may include details such as policies, procedures, or updates on specific matters.
Example: The official memorandum issued by the company outlined the new policies and procedures for employees to follow.