粗剪阶段先保证信息顺序和动作连续，再处理节奏。每个切点都应带来新信息、视线转移或情绪变化；如果相邻镜头没有变化，优先缩短而不是添加转场。 In the rough cut, protect information order and action continuity before polishing rhythm. Every cut should add information, redirect attention, or change emotion; if adjacent shots do not change, shorten them instead of adding a transition.