A rapid side-to-side shaking motion is easily detected because, although the movements are relatively small, the accelerations are large enough for useful gesture acquisition.

可以很容易地检测到一次快速摇动，这是因为，尽管移动幅度相对较小，但是加速度比较大，足以捕捉到有用的动作。

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It's a setup that expands on the water bowl camera, with more splashing and even slow-motion shots of the puppies shaking off water.

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Ms. Wachtel did a little demonstrating, which included her shaking technique an energetic two-shakes up and two-shakes down motion.

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