A modern sports glider, with long, slender wings, is the most aerodynamically efficient aircraft, with a lift-to-drag ratio of around 50:1.
现代运动用滑翔机的机翼长而细薄，拥有最佳的空气动力学效率，其升阻比达到50：1。
There is little in the way of future predictions, apart from the suggestion that aeroplane wings may soon have bristles, a "fuzziness" that would reduce drag and therefore be more fuel-efficient.
他几乎没有对未来做预言，除了暗示飞机翅膀可能很快就会有短毛，因为这种“羽毛特性”会降低拖力，因而更节约燃料。
There is little in the way of future predictions, apart from the suggestion that aeroplane wings may soon have bristles, a "fuzziness" that would reduce drag and therefore be more fuel-efficient.
他几乎没有对未来做预言，除了暗示飞机翅膀可能很快就会有短毛，因为这种“羽毛特性”会降低拖力，因而更节约燃料。
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