And for that, they come together, collect all the local materials -- local materials like rubble, sand, aggregates, usually a government subsidy is available to meet at least part of the cost of external materials like cement, steel, toilet commode.
为了这一目的，他们团结一起， 在当地取材—— 当地的材料例如瓦砾，沙石，集料， 而通常政府至少也会给予 部分补贴来采购其他材料，例如 混凝土，钢铁，和便桶。