/əˈθɔrəti baɪ lɔː/ – Phrase
Definition: quyền hạn theo luật pháp.
A more thorough explanation: Authority by law refers to the power or right granted to a person or entity by a legal system to act in a certain capacity or make decisions within a specified scope of responsibility. This authority is derived from laws, regulations, or other legal sources that define the limits and extent of the individual or entity’s power to act in a particular situation.
Example: The police officer had the authority by law to arrest the suspect for committing a crime.