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audio guide

noun
🔊/ˈɔːdiəʊ ɡaɪd/
🔊/ˈɔːdiəʊ ɡaɪd/
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  1. a small device, usually with headphones, that visitors to a museum, gallery, city, etc. can hold in their hand and use to listen to recorded information while they are walking around导览机；语音导览机
    • The museum provides free audio guides.博物馆提供免费的导览机。