base and bracket

例句：

1. 1. The company's success is built on a strong foundation of technology.
   该公司的成功建立在强大的技术基础之上。
2. 2. The team's performance depends on the quality of the base.
   团队的表现取决于基础的质量。
3. 3. The scientist conducted experiments to test the theory of relativity at the baseof space.
   科学家在太空的基地进行了实验，以测试相对论理论。