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The device studies patterns of brainwave activity and turns them into a moving image on a computer screen.

这台仪器分析脑电波的活动模式，并把它们转换成电脑屏幕上的活动图像。

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You can also adjust the margins "on the fly" by moving the guides on screen (in some programs).

在某些程序中，你甚至可以“实时的”在屏幕上拖动边线来调整边距。

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Suppose that we have a tennis ball moving across the screen for 1 second.

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Before you can get started, though, you need to do a one-time calibration process, which involves following a circle moving around the screen.

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Movie actress Zooey Deschanel has expanded her ambitions recently, moving from the big screen to the indie-rock stage.

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