Power, heat, light, water and transportation are the lifeblood of cities.

电力，暖气，灯光，饮水及运输是城市的活力来源。

youdao

Power, heat, light, water and transportation are the lifeblood of cities.

电力，暖气，灯光，饮水及运输是城市的活力来源。

youdao