因为它们的主要用途不是功能性的，所以它们只在制造材料方面受到限制。

Because their primary purpose is not functional, they are only limited in terms of the materials used to make them.

youdao

他的公司出售“各种制造材料的机器”的引擎。

His firm sells engines for "every [kind of machine] that makes stuff".

youdao

美国的太空总署NASA甚至购入了有问题的制造材料。

NASA, America's space agency, has even bought suspect materials.

youdao

So, if you could make automobiles with a high magnesium content, you would reduce the mass, reduce the energy required, and thereby reduce the environmental impact.

所以，如果你能用含镁量,很高的材料来制造手机，你就能减轻手机的质量，减少制造所需能量，因此减轻了对环境的破坏。

麻省理工公开课 - 固态化学导论课程节选

So, if we're going to go to the moon, we're going to go to Mars,we want to be able to produce oxygen, structural metals and photovoltaic materials from in situ resources.

如果我们要去月球上，我们要去火星上，我们则必须要制造,氧气，结构金属和光电材料,就在原地制造。

麻省理工公开课 - 固态化学导论课程节选

The paradox then is how do you create such a fast computer with such slow stuff?

那么这里的悖论就是,你是如何用传输如此缓慢的材料,制造出反应如此迅速的计算机的

耶鲁公开课 - 心理学导论课程节选