煤焦油是伦敦煤气道路照明几乎无限的副产物，利用便宜量大的煤焦油，染厂于1857年开始生产世界上第一种合成染色材料。

Utilising the cheap and plentiful coal tar that was an almost unlimited byproduct of London's gas street lighting, the dye works began producing the world's first synthetically dyed material in 1857.

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世界上的建筑结构也根据材料的客观限制进行了设计。

The world's architectural structures have also been devised in relation to the objective limitations of materials.

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如果我们不去实践，在这世界上所有有关自我发展的材料都是毫无价值的。

All the material about self-development in the world is worthless if we never act on it.

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They're focused on beyond that and all the materials and all of the things that could dramatically change the world.

而关注于很久以后,所有的材料,以及所有可以极大程度改变世界的事物。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选