These birds must have a good optomotor response considering they are stationary 90 per cent of the time.
鉴于蜂鸟在90%的时间里都处于静止状态，它们肯定具有一种优秀的视觉运动（optomotor）反应能力。
The reaction of optomotor intensifies with the increasing width and number of vertical stripes within certain range.
就垂直条纹而言，在一定范围内，反应随条纹宽度和数量的增加而增强。
The reaction of optomotor intensifies with the increasing width and number of vertical stripes within certain range.
就垂直条纹而言，在一定范围内，反应随条纹宽度和数量的增加而增强。
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