Close the windows: it reduces the inherent aerodynamic sleekness of your car, and can lead to a 10% decrease in fuel economy.

关上车窗：这能增强汽车的流线性，降低空气阻力，可以提高百分之十的燃料利用率。

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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.

WSJ: DeLorme inReach SE, a Satellite Gadget for the Civilian | Geek Chic

The new definition of luxury now includes integration, presentation and forward-thinking perception the sleekness of well-thought out clean technology is an essential part of the package.

FORBES: Super Cars And The Changing Landscape Of Electric Luxury

"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