As the length of the construction takes years, workers end up forming a rather rough-and-ready informal city, making for quite a juxtaposition against the sophisticated structures that they're building.
由于施工期需要多年的时间， 工人最终形成一种非常原始和简单的 非常规城市，和他们正在建设的 复杂结构的建筑并存。