translation.en: But the pores are actually oftentimes much bigger than the cells, and so even though it's 3D, the cell might see it more as a slightly curved surface, and that's a little bit unnatural.
translation.zh: 但是这些孔很多时候 却比细胞要大得多， 所以即使它是3D的， 对于细胞来说可能会是一个弯曲的表面， 而这是有点违背自然规律的。