ADV [ADVERB after verb] [beADVERB]在(或到)舞台上 When someone such as an actor or musician goes onstage, they go onto the stage in a theatre to give a performance. 在(或到)舞台上
When she walked onstage she was given a standing ovation.
当她走上台时,观众起立鼓掌欢迎。
You have to be onstage at eight o'clock.
你务必8点钟上台演出。
Onstage, the musicians are actually sitting behind the loudspeakers.