But others are much more low tech, like the reflective paint on the roof.

但其他一些则相对技术含量较低，如房顶的反光漆油。

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The two homes with roofs of highly reflective paint used 35 percent less electricity last summer than the two with less reflective paint.

两栋用高反射率涂料的水泥屋瓦装修的房屋去年夏天使用的电量比另外两栋房屋少了35%。

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It's less reflective than black acrylic paint.

它的反射能力甚至比黑色丙烯酸涂料还差。

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Because the white paint is highly reflective, the cumulative effect of the millions of photons hitting the asteroid would be enough to change its course.

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