Forty percent of that powers old-fashioned incandescent light bulbs—a 19th-century technology that wastes most of the power it consumes on unwanted heat.

其中40%的电能用于老式白炽灯——这是19世纪的一项技术，它所消耗的大部分电能都浪费在制造多余的热量上。

youdao

Old-style incandescent light bulbs generate heat as well as light.

小贴士和提醒：老式的白炽灯泡既可以散热还可以照明。

youdao

Neither are vending machines or incandescent light bulbs or cellphones or laptop computers.

无论是用来买卖的机器、白炽灯泡、移动电话或者笔记本电脑，也同样面临着危机。

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LEDs produce as much light as incandescent light bulbs but consume only 10 percent of the electricity and last many times longer.

VOA: standard.2009.12.13

On the eve of Christmas 2007, quite a few obituaries for incandescent light bulbs were penned.

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He also called on Congress to ban incandescent light bulbs and require better gas mileage for cars.

NPR: Al Gore Testifies Before Congress on Global Warming

Remember those bi-partisan Congressional votes phasing out incandescent light bulbs in favor of fragile mercury-laden, landfill-destined compact fluorescent lighting to clearly dispel any such illusions.

FORBES: Paul Krugman's Toxic Shock Syndrome: Mercury Madness