Bówùguǎn de jiěshuōyuán dài wǒmen cānguān le zhǎnpǐn.
The museum guide showed us around the exhibits.
Tips
usage
Covers two related roles: (1) sports/event commentator (体育解说员, 比赛解说员), and (2) documentary narrator or museum/tour guide. For a strictly journalistic 'commentator/columnist' use 评论员 (pínglùnyuán).
grammar
员 (yuán) is the 'staff member / personnel' suffix — same in 服务员 ('waiter'), 演员 ('actor'), 教员 ('teacher'), 售货员 ('shop assistant'). Productive for naming roles.