利用整个方阵的LED背景灯光的屏幕效果要好很多，出了提供更多的统一亮度，他们同样能满足当屏幕需要变暗时所需要达到的效果。

Screens that use a full-array of LED backlights are much better. Apart from giving more uniform brightness, they allow the screen to be dimmed selectively in places where a scene needs to be dark.

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美国宇航局的开普勒飞船发现了称号为开普勒16 b的新行星，当它飞越或交叉在它的母恒星前面时，会造成了每颗恒星的亮度周期性地变暗。

NASA's Kepler spacecraft uncovered the new planet, dubbed Kepler 16b, as it transited-or crossed in front of-both its parent stars, causing the brightness of each star to dim periodically..

youdao

美国宇航局的开普勒飞船发现了称号为开普勒16b的新行星，当它飞越或交叉在它的母恒星前面时，会造成了每颗恒星的亮度周期性地变暗。

NASA's Kepler spacecraft uncovered the new planet, dubbed Kepler 16b, as it transited—or crossed in front of—both its parent stars, causing the brightness of each star to dim periodically. 。

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