This angle is 90 degrees.

This is our third date.

He believes in urban myths.

This urban infrastructure, especially the development of highways, contributes greatly to economic development.

Kyoto has a sister city relationship with Boston.

The landscape of the countryside has changed due to the progress of urbanization.

This area is rapidly urbanizing.

We moved to a newly developed satellite town.

Singapore is a prosperous city state.

Tokyo is a metropolis of Japan.