English @ the Movies: 'Go Undercover'

source: VOA Learning English      2017年7月21日
Do you know what "go undercover" means? It is this week's English @ the Movies saying, and it comes from the film "Baywatch." The movie is about lifeguards at a California beach who try to catch criminals. Originally published at - https://learningenglish.voanews.com/a...

# undercover--working secretly using a false appearance in order to get information for the police or government:
an undercover police operation
an undercover detective 
(source:https://dictionary.cambridge.org/dictionary/english/undercover）