chamber orchestra
US /ˈtʃeɪm.bər ˌɔːr.kɪˈstrə/
UK /ˈtʃeɪm.bər ˌɔːr.kɪˈstrə/

1.
室內樂團
a small orchestra, typically with 10 to 40 players, that plays in a small hall or chamber
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The chamber orchestra performed a beautiful Mozart symphony.
室內樂團演奏了一首優美的莫扎特交響曲。
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They are looking for new musicians to join their chamber orchestra.
他們正在尋找新樂手加入他們的室內樂團。