简单的剪辑技巧能使摄影机停顿，从而让一名道具管理员把没有发光的剑(只是一把剑柄)替换为发光的剑(插上了剑刃的剑柄)。
A simple editing trick stopped the camera so that a prop man could replaced an unlit saber (which is just a handle) with a lit saber (one with a blade attached).
结果：现在研究员和临床医生通过利用适当的心理测量学道具可以拥有多种手段来评估患者的疗效。
Results. Researchers and clinicians now have multiple instruments that can assess patient outcomes with adequate psychometric properties.
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