This would be enough to power an electronic speaker or small LED (light-emitting diode) lights, but not enough to operate a laptop, which requires an estimated 30 to 50 watts.

这对于电子扬声器或小型LED灯已经足够，但还不足以支持笔记本运行。笔记本一般需要30到50瓦的功率。

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Electronic data piped into one chip is converted into laser light that travels down an optical fiber and is transferred back into electrical signals a few fractions of a second later.

电子信号进入集成电路后被转换成激光，由光纤传出，在不到1秒的短时间后重新被转换成电子信号。

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To get smaller kids involved, create a sticker chart and place a sticker on the chart each time a child turns off or unplugs an electronic device or light that is not in use.

让更小的孩子也加入进来，创建一个标签图标，每次孩子关掉或者拔掉不使用的电器或者灯的插头的时候就给他贴个标签。

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Inside, photo-electronic cells read the light pattern and interpreted it as sound.

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That said, the 2% by volume that goes by air accounts for around 35% of the value: light, expensive goods such as high-end electronic components tend to be flown.

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Light-emitting diodes have progressed from simple red indicators on electronic products to become torches, streetlights and car headlights.

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