The difference is that the printer builds a three-dimensional scaffolding out of a sugar-based material called a hydrogel.

VOA: special.2010.10.19

But you get scaffolding; you get depth or perspective: counting thousands of stars, about some vast work that involved the whole order of the universe."

不过当你们看到脚手架时;,你们能够得到深度的认知：,数数数以千计的星星：,缓缓移动的星星,就像从事于某种,关系到全宇宙的秩序的建筑工作“

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