The city planner decided to build an underground drainage system.

城市规划师决定建一个地下排水系统。

David lewis an architect and city planner.

戴维·刘易斯，一位建筑师兼城市规划者。

Up to now, there really isn't a lot of evidence-base to tell a city planner what would be good, what would be bad.

到现在为止，还没有足够的经过验证的建议来告诉城市规划师们什么是好是坏。

Dr. Martin Wagner, a former city planner for Berlin and a professor at Harvard, described slum-ridden cities as "mammoth monsters of ugliness, inefficiency, and distortion."

哈佛大学的教授马丁·瓦格纳博士，曾经是柏林的城市规划师，形容遍布贫民窟的城市为“丑陋，低效率，扭曲的庞大怪物”。

Consider setting up a panel discussion featuring representatives of different, but related, vocations - for example, a city planner, an architect, and a building contractor.

可以考虑举行一个小组讨论会，邀请不同但相关的职业的代表来参加，例如都市设计师、建筑师、及建筑包商。