观看你的伴侣如何使用手是一个很棒的教材，通过视觉刺激也很容易让你们两人兴奋起来。
Watching your partner as they use their own hands is a great teaching tool as you both get turned on by the visual display.
观看3d电影会给观众带来一种全新的视觉体验。
Watching a 3d movie confronts viewers with an entirely new sensory experience.
视觉健康者增加一个视觉刺激项目，他们观看手部动作短片，并用手势做出来。
Sighted subjects completed an additional visual version of the stimuli in which they watched movies of the hand-executed actions and performed the motor pantomime.
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