Adjust brightness: Dimming the screen is another way to extend battery life.

调整亮度：调暗屏幕是另一种延长电池寿命的方式。

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We can then adjust brightness and contrast to compensate without exceeding the limit.

接下来我们可以在不超过限制的前提下调整亮度和对比度进行补偿。

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You'd adjust the brightness and contrast Settings on that fancy 42 "HDTV you've just bought: why wouldn't you do the same for the computer displays that you stare at every day?"

你会在你新买的42寸HDTV上调整亮度对比度，为什么不在整天面对的计算机屏幕上做同样的调整？

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Here you can also use sliders to adjust brightness and contrast.

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This lets a built-in microprocessor adjust the brightness and the spread of the Nao's beam accordingly.

WSJ: The Petzl Nao: A Smarter Light | At Play

In Stanza, you can choose the colors of the words and of the page, and you can adjust the brightness with a vertical thumb swipe as you read.

NEWYORKER: A New Page