dress rehearsal

1. N-COUNT The dress rehearsal of a play, opera, or show is the final rehearsal before it is performed, in which the performers wear their costumes and the lights and scenery are all used as they will be in the performance. 彩排

We went to all the dress rehearsals together. 我们一起去了所有的彩排。

2. N-COUNT You can describe an event as a dress rehearsal for a later, more important event when it indicates how the later event will be. (稍后更重大事件的) 预演

Yesterday's NEA event looked like a dress rehearsal for the Democratic convention. 昨天的全国教育协会活动看上去像是一次民主党大会的预演。