Definition
To be extremely strong, reliable, or unyielding.
堅如磐石
Their friendship is as solid as a rock, having withstood the test of time.
他們的友誼堅如磐石，經受住了時間的考驗。
The company's financial standing is solid as a rock.
公司的財務狀況穩如磐石。
His commitment to the project is as solid as a rock and will not waver.
他對這個項目的承諾堅如磐石，不會動搖。