ancient fires
古老的火灾
以上为机器翻译结果，长、整句建议使用 人工翻译 。
In China and ancient Greece, people focused the sun's rays with mirrors or glass to light fires.
在中国和古希腊，人们用镜子聚合太阳光来生火。
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Yale economist William Nordhaus examined the history of lighting technologies, from open fires and stone animal fat lamps in ancient times to modern incandescent and fluorescent bulbs.
FORBES: Economic Abundance, Real and Imagined
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