一旦你开始感恩，一道新的曙光，有时是一道如天堂般明亮的光，会浮现。
Once you begin, a new light dawns, sometimes a brilliant light, a light as bright as heaven itself.
OLED电视采用基于有机材料的显示技术，一旦电荷从中通过，就可发出自然光，而不是发出像液晶显示屏和等离子屏幕那样的背光。
The OLED TV USES display technology based on organic materials which emit light naturally, once an electric charge is passed through them, rather than being back-lit as in LCD and Plasma screens.
光一旦照射到这些含基因的神经元上，就会改变它们的行为。
Shining a light on neurons containing the gene can change their behavior.
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