symphony orchestra
US /ˈsɪm.fə.ni ˈɔːr.kɪ.strə/
UK /ˈsɪm.fə.ni ˈɔːr.kɪ.strə/

1.
orquestra sinfônica
a large orchestra that plays classical music, typically including string, woodwind, brass, and percussion instruments
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The symphony orchestra performed a magnificent Beethoven piece.
A orquestra sinfônica executou uma magnífica peça de Beethoven.
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She dreams of playing the violin in a renowned symphony orchestra.
Ela sonha em tocar violino em uma renomada orquestra sinfônica.