The ingenuity of Renaissance architects extended beyond merely using a material in a way not suggested by its outward natural appearance.
文艺复兴时期的建筑师的独创性不仅仅是使用一种材料,而是以一种不被其外在自然外观所暗示的方式。
But the acquisition of radioactive material for a so-called 'dirty bomb,' which is radioactive material that is dispersed with a conventional explosive device, that is not that challenging.
VOA: standard.2009.05.01
Something that's not a material object.
一个不是由物质实体构成的东西
So that would probably be de Broglie's answer for why, in fact, we're not observing the wavelength behavior of material on a day-to-day life.
所以那就可能是德布罗意关于,为什么我们无法再日常生活中,观测到物质的波动行为的答案。
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