Search - 19世纪中叶,由工程师巴泽尔规划,伦敦市政当局着手建设现代下水道系统,由互相衔接的5条下水道组成,包括450英里的主干道和1.3万英里的支道。该系统于1868年完工,耗资460万英镑

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