area available for reinforcement

例句：

1. 1.The city has a large area of green space.
   这个城市有大片的绿地。
2. 2.The team competes in various areas of the game.
   这个团队在比赛中参加各种项目。
3. 3.The new policy affects all areas of the economy.
   新政策影响经济的所有领域。