area variable

例句：

1. 1. The city is divided into several areas.
   这个城市被分成了几个区域。
2. 2.The government has been working on improving the transportation system in the area.
   政府一直在努力改善该地区的交通系统。
3. 3. The new project will cover an area of 10 square kilometers.
   这个项目将覆盖10平方公里的区域。