To prevent that event from becoming a catastrophe, first responders will join members of the public in rehearsals that involve communication, evacuation, search and rescue, and other scenarios.
2019年12月六级真题（第一套）阅读 Section C
柯林斯高阶英汉双解学习词典释义
N-VAR
排练;彩排
A rehearsal of a play, dance, or piece of music is a practice of it in preparation for a performance.