Google Glass is a pair of glasses with a battery hidden inside the frame .

谷歌眼镜内含电池，放置在镜框内。

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While electricity exists as separate charges, like the plus and minus of a battery, magnets always come in a joined pair;

电可以作为分开的电荷存在，比如说电池的正极与负极，而磁则总是要成双成对地出现。

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Low power consumption, intelligent province electricity design patterns (a pair of new battery can use 6 months above).

超低功耗，智能省电设计模式。(一对电池可使用6个月以上)。

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As Hack A Day notes, one can easily question the wisdom of "a pair of microwave transceivers and a LiPo battery strapped directly over one's eyes and brain, " but that's the price of progress, right?

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And when the battery charge runs low, the British supercar switches to an alternative power source, a pair of 77-pound micro-turbines that serve as onboard generators.

MSN: A battery beats at the heart of these muscle cars

Instead, we got a look at a pair of Nyko speaker stands for the PlayStation Vita and the Kindle Fire, as well as a battery powered case for Amazon's slate.

ENGADGET: Nyko Kindle Fire power case, Vita speaker stand hands-on