a person who plans the way in which towns and cities are built in order to make them pleasant to live in

The town planners made a real mess of the riverside area during the 1960s. 城市规划者在1960年代把河滨地区弄得一团糟。

The 39-year-old town planner works for the Tokyo metropolitan government. 这位39岁的城市规划师为东京都政府工作。