a new central leading group的用法和样例：
- My mother has had a new central hearting system put in.
- They put out for tenders for a new central heating system.
- My mother has had a new central heating system put in.
- The new Convergent combined Wuhan Huagong Hengxin Laser Tech Co., Ltd. and former OVL Convergent, formed a new leading group.
- A new group of singers are coming to the forefront.
- I got a new coat in that store last week.