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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The pair said they braved winds and below-freezing temperatures on Monday afternoon to walk along the water at Battery Park and see how their favorite monument had withstood the megastorm.

WSJ: Statue Is Alone Until Island Repaired

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