announcer

Từ điển Oxford Advanced Learner 8th

an·noun·cer [announcer announcers] BrE [əˈnaʊnsə(r)] NAmE [əˈnaʊnsər] noun
1. a person who introduces, or gives information about, programmes on the radio or television
see also ↑host, ↑presenter
2. a person who gives information about sth in a station, an airport, etc, especially through a ↑loudspeaker

Example Bank:
•The PA announcer called out the score.
•The station announcer warned us that the train was running late.
•The continuity announcer advertised a few forthcoming programmes.