The colour depends on the properties of the semiconductor, and these can be tuned to produce light that is similar to natural daylight but with virtually no ultraviolet or heat.

光的颜色取决于半导体的特性，可以对这些特性加以调试以发出与自然日光相近的灯光但却几乎不含紫外线或热量。

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White is another roof colour used to fight both the urban heat island effect and global warming in general, by simply reflecting light back into space.

白色可以直接把光反射到空中，也通常是一种被用来对付城市热岛效应和全球变暖的屋顶颜色。

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To create a heat map, simply take any model of the system and shade or colour different areas of the model to indicate the ease or complexity of working on different each area.

要绘制热点图，任取一个系统模型，把模型中的每个区域用不同的颜色，以此来表明各个区域上工作的难易程度。

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Windows with the shutters and curtains closed show up in the images in a deep blue colour, demonstrating little heat is escaping.

BBC: Shutters and curtains 'act as double glazing'

The fires have been caused by days of searing heat across much of the country - so much so that Australia's Bureau of Meteorology was last week forced to add a new shade to its colour-coded temperature chart, for heat above 50C.

BBC: News - Australia bushfire destroys homes and damages observatory