Motion sensor lighting comes on automatically for a fixed period of time and most units can be adjusted to stay on anywhere from a minute to several hours.

运动传感器自动照明来一段固定的时期，且大单位可以进行调整，以留在任何地方从一分钟到几个小时。

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The laws of motion of any kind only become comprehensible to man when he examines units of this motion, arbitrarily selected.

人类只有在审视随意抽取的任一运动的细分单元时，方可逐步理解该运动的规律。

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The motors and drive units on these two types of polisher's oscillate in an eccentric circular motion.

发动机和转速单位在这两种抛光机上的振蒎是一个偏圆心的运动。

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Most impressively, Ballmer announced that the company has sold 8 million units of its Kinect motion sensor since its release on November 4th.

FORBES: Ballmer Gets His Game On At CES

Microsoft just laid down a number of announcements about motion-gaming system Kinect, the biggest of which is that Kinect sold 8 million units in the first 60 days.

FORBES: Kinect Tops 8M Sold, Adds Netflix And Hulu Gestures, Tracks Expressions

Nintendo s Wii has been the undisputed leader of the current console generation, moving more than 95 million units, but its success was based in part on the appeal of Wii s motion-sensitive controllers to first-time videogame players.

FORBES: X Is For Entertainment