city 一般指大城市或重要城市。
town 一般指规模小的城镇，也指城市中的市区，有时也泛指城市。
参考例句
1. Now they are a city of trees. 而如今他们是一棵城市的树。
2. We have a showroom in this city. 我们在本市设有一个陈列室。
3. BI suppose every big city has them. 我猜想大多数大城市都会有。
英英解释
n.
1. a large and densely populated urban area; may include several independent administrative districts
2. an incorporated administrative district established by state charter
3. people living in a large densely populated municipality
