The new application of the white LED, the structure and principles of Card Light as well as its application in life are described.

主要介绍了白光led的新应用——卡灯的结构和原理，及其在生活中的应用。

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Indoors, a bounce card like this has the added benefit of throwing light onto your subject from two directions, forward and bounced off the ceiling.

在室内，这种反光板还有一些额外的好处，可以从两个方向给被摄体打光：直接反射光和天花板发射光。

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The "MultiAccount" card has two buttons on its face, each with an indicator light that can be pressed to record data to its magnetic strip.

其中一种“多帐号”智能信用卡在其表面上有两个按钮，每个按钮拥有一个指示灯，你一按就能够将帐号数据记录到它的磁条上。

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Borrowing the same principles as the Lightscoop, you direct the light away from the subject, in this case reflecting it with the bounce card so a softer, diffused light illuminates the subject and background.

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It earned the London Irish flanker a yellow card, but Argentina made light of their numerical deficit by running in a sensational fourth try.

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What options do travellers have in light of the credit card ban?

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