Is there a set phrase for this term? It seems to me that an acceptable translation would be 舞台左右侧, but that seems rather long.
在中文里面,这词有一个约定俗成的翻译吗?我觉得”舞台左右侧“这翻译还行,但还是有点长。
see online dictionaries, e.g. iciba: wing in the wings 1In the stage wings, unseen by the audience. 在观众看不到的舞台两侧 bkrs:舞台两则 舞台左侧 舞台右侧
侧面 is what you are looking for.
If you want to be more specific, you can write 舞台的侧面。