The break-up of the gas piping, the letting out of liquefied petroleum gas, the bursting of the running water pipe, calamity accident caused in subside of road surface and bridge,etc.
煤气管道破裂、液化石油气泄漏、自来水爆裂、路面桥梁塌陷等引起的灾害事故；
A pump lowered into the river pulls the water through a filter and into a pipe which carries the water under the road and the ground floor of the house.
置放于河里的抽水管，将水吸进过滤器中，再进入一个能通过地面到达房子的管子。
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