on firm ground

例句：

1. 1. The company's success is built on a solid foundation of research and development.
   该公司的成功建立在坚实的研究与开发基础之上。
2. 2. The project was launched on firm ground after careful planning.
   该项目在周密规划之后，以坚实的基础启动了。
3. 3.He decided to move to a new city on firm ground, knowing that it would be more stable than his current location.
   他决定以坚实的基础搬到一个新城市，知道这将比他现在的位置更稳定。