correction for centring

例句：

1. 1. The city centre is the hub of the town's business district.
   市中心是该镇商业区的中心。
2. 2. The team needs to find a way to concentrate on their main objective.
   团队需要找到一种集中精力实现主要目标的方法。
3. 3. The new project will focus on improving the efficiency of the production process.
   新项目将专注于提高生产过程的效率。