“稳固地”的英语？

她一双脚稳固地立在微温而粗糙的砖地上.Her feet firmly planted on the tepid rough brick of the floor.该商店不久即在城里稳固地建立起来.The business was soon firmly established in the town.那位哲学家把思想稳固地建立于理性之上.The philosopher has his ideas built on the rock of...