A town with strong walls的用法和样例：
- It's a town with a lot of old-world charm.
- I want to live in a town with a beautiful position on the sea.
- Woe to him that buildeth a town with blood, and stablisheth a city by iniquity!
- Towns with a Citadel attract more troops than a town with a Fort.
- Ammonia is a colorless gas with strong smell.