area of high nuclear radiation

例句：

1. 1.The area of the city is 20 square kilometers.
   这个城市的面积是20平方公里。
2. 2. The government has allocated a new area for development.
   政府已经为发展分配了一个新的区域。
3. 3. The team needs to work together in the same area.
   团队需要在同一个区域内合作。