Sleekness and smart do not show one's maturity. Maturity refers to one who is more considerate, understanding, and full of tolerance.

圆滑精明那不是成熟，成熟是更能体谅、理解人，更懂得宽容。

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Sleekness, however, is likely not a primary concern for those descending into the depths of the Grand Canyon or traversing Death Valley.

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"Voltaic set out to design a lightweight case that could charge a tablet quickly, but also match the sleekness and simplicity of the many of the tablets, " said Shayne McQuade, CEO of Voltaic Systems.

ENGADGET: Voltaic Spark Tablet Case powers your pad with the Sun's rays

Firms like GadgetTrak are developing systems like this to help quash the rising rate of electronics robberies in the U.S. The small size, sleekness and mobility that make today's electronics convenient also make them great targets for thieves.

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