第八章 The Industrial Revolution 工业革命
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used， instead of gas power， to light city street lamps. This increased the efficiency of streetlight in Britain， as well as lessened the fire hazard gas lamps had proposed. Better lit cities also contributed to a decreased urban crime rate. Also， the new use of electric engines in cars improved the rate of transportation in British cities， as well as decreased the pollution level formerly heightened by older engines， which had created many fumes. As city populations grew due to the advancement of industry， a new water system， which included a sewer and provided for running water in individuals’ homes， improved the city’s sanitary conditions. Similar improvements included the expansion o