The frame of an airship is made of light but strong metal.

飞船的框架是用轻而坚固的金属制成的。

《新英汉大辞典》

GE began selling Lexan in 1957. A potential replacement for glass and metal, it was used for everything from electric coffeemakers to the light covers on the wings of supersonic aircraft.

通用从1957年开始销售聚碳酸酯以逐步取代玻璃和金属，它的应用非常广泛，从电子咖啡机到超音速飞行器的表面材料。

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Light sent into the oil layer was confined there, bouncing between the metal and air boundaries. The beam spread out ever more quickly, generating a trumpet-shaped glow (see image).

当把光传入油层后，就被约束在那里，光线在金属和空气的边界之间不断反弹，于是产生了喇叭状的辉光(见图片)。

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The light house man led Rudolf up the metal stairs.

VOA: special.2010.05.08

So, for example, here we're showing rubidium and potassium and sodium plotted where we're plotting the frequency -- that's the frequency of that light that's coming into the metal versus the kinetic energy of the electron that's ejected from the surface of the metal.

让大家看来都是可以理解的事情,就是把不同金属的观测结果,画到一张图里面来，例如这里,我们展示的是钠，钾,铷的频率-这是照射金属的光的频率,和金属表面出射电子动能的关系。

麻省理工公开课 - 化学原理课程节选

Everything was covered with a thick layer of grime, from the old fashioned metal light fittings to door handles and banisters.

BBC: Reawakening the Underground

They used intense nanosecond pulses of laser light to turn the metal's lustrous surface a deep black.

BBC: Copper wire

The polymers were covered with a thin aluminum coating, but once fed electricity, they began to glow so brightly that light shone through the metal.

FORBES: Seeing the Light