He gave a performance in the auditorium.

他在礼堂里作了一次演出。

youdao

My guess is in the auditorium, that's where they usually are.

我猜是在大礼堂里，他们通常都在那里。

youdao

It is hereby announced that there will be a talk on the international situation in the auditorium at 3 on Saturday afternoon.

定于星期六下午3点在礼堂举行国际形势报告会，特此通知。

《新英汉大辞典》

The instrument, which has 7, 710 pipes, was installed in the auditorium in 1954 but was removed for renovation work.

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On Thursday, Avital, 84, and Lewis, 90, met face-to-face for the first time in the auditorium at Wappingers Junior High School.

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He said in an interview that his favorite moment in school was cutting class to go play the piano in the auditorium.

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