/ˈfɛdərəl ˈbjʊroʊ əv ˌɪnˌvɛstəˈgeɪʃən/ – Phrase
Definition: cục điều tra liên bang Mỹ.
A more thorough explanation: The Federal Bureau of Investigation (FBI) is a federal law enforcement agency of the United States Department of Justice that serves as the principal investigative arm of the federal government. The FBI is responsible for investigating and enforcing federal laws, conducting intelligence operations, and protecting the United States from domestic and foreign threats.
Example: The Federal Bureau of Investigation (F.B.I) is responsible for investigating federal crimes and enforcing federal laws in the United States.