1. 管弦乐队
An orchestra is a large group of musicians who play a variety of different instruments together. Orchestras usually play classical music.
e.g. ...the Royal Liverpool Philharmonic Orchestra.
皇家利物浦爱乐乐团
2. （剧院或音乐厅的）正厅前排座位
The orchestra or the orchestra seats in a theatre or concert hall are the seats on the ground floor directly in front of the stage.
名词管弦乐队; 管弦乐队的全部乐器