head formed by spinning

例句：

1. 1. The head of the companyis responsible for all decisions.
   公司的负责人负责所有决策。
2. 2. The teacher gave a speech onthe importance of education.
   老师就教育的重要性发表了演讲。
3. 3. The team decided to form anew committee to lead the project.
   团队决定成立一个新委员会来领导这个项目。