A new network design that avoids the need to convert optical signals into electrical ones could boost capacity while reducing power consumption.

一种无需将光信号转换为电信号的联网设计可能大幅提升容量，同时降低功耗。

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Electrical storage devices known as capacitors charge and discharge very quickly, but because they hold their charge on the surface of metal plates, their storage capacity is limited.

电荷存储元件——电容器，可以快速地充放电，但是因为电荷被存储在电容器金属片的表面，所以电荷容量有限。

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It took the United States over 100 years to build the electrical transmission capacity it has today.

而美国为建设今天具有的电力传输能力用了一百多年时间。

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