这后一性质说明了为什么几何实现一般需要用三维空间而不是二维空间。
This last property illustrates Why, in general, three-dimensional space is required for the geometrical realization rather than two-dimensional space.
曾几何时一切都可管理还是物理上可实现的。
There was once a time when everything that was manageable could also be physically touched.
在设计阶段，这种精确的工作使我们能够用高精度的技术，实现精确的几何形状。
This precise work during the design phase allowed us to achieve an exact geometric shape with high-accuracy technic.
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