Explain the meaning of each word (1–7): 2. announcer, commentator, journalist

Перевод задания: Объясните значение каждого слова.

announcer — a person who introduces programmes or reads news on radio or television (диктор, ведущий).

commentator — a person who gives opinions or explains events, especially during a broadcast (комментатор).

journalist — a person who collects, writes or reports news (журналист).