胚胎早期，原始脉管是一种单纯由内皮细胞组成的管状物，它们在间质中间形成一个致密的网。
The early embryos, original fistula is a kind of pure composed by endothelial cells in the tubes, they formed a dense stroma between the nets.
展馆由四栋建筑物围绕组成，中间为大型中央区域，象征热情的社区，也是展示开始的地方。
Its four blocks lay out real urban scenes that surround the large central square, which ACTS as a place of welcome and a symbol of community, the starting point of the exhibition.
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