Definition
To be extremely strong, reliable, or unyielding.
坚如磐石
Their friendship is as solid as a rock, having withstood the test of time.
他们的友谊坚如磐石，经受住了时间的考验。
The company's financial standing is solid as a rock.
公司的财务状况稳如磐石。
His commitment to the project is as solid as a rock and will not waver.
他对这个项目的承诺坚如磐石，不会动摇。