这条小路不再是泥泞的，而是坚实的地面。

The path was no longer muddy but ___solid ground.

他被藏在草丛里的一个坚硬物体绊倒了。

He tripped over a ___solid object hidden in the grass.

再次感到脚下是坚实的地面，她松了一口气。

She was relieved to feel ___solid ground beneath her feet again.