鼠标的滚轮和ipone都可以进行动作感应，但是只有手势感应允许动作在三维空间内进行。
Beyond motion sensing, which a mouse rolling on its trackball already does handily, or iPhone pinching, gesture sensing can allow movement in three dimensions.
这场战争期间使用的相机是一个显著的改善行动，并允许动作拍摄，但一些照片的真实性问题仍然被问及。
The cameras used during this war were a significant improvement and allowed for action shots to be taken but still questions were being asked about the authenticity of some of the photographs.
电影分析允许研究人员用慢动作一遍又一遍地仔细研究婴儿的反应。
Film analysis permits researchers to carefully study the infant's responses over and over and in slow motion.
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