focus center

例句：

1. 1.The teacher focused the class on the importance of teamwork.
   老师将班级的注意力集中在团队合作的重要性上。
2. 2.The project's focus centered on developing sustainable technologies.
   该项目的焦点是开发可持续技术。
3. 3. The conference was designed to focus on innovative ideas and solutions.
   会议旨在聚焦于创新的想法和解决方案。