solid solubility

例句：

1. 1. The solid rock is difficult to move.
   这块固体岩石很难移动。
2. 2. The solid wood is sturdy and durable.
   这根实木很结实耐用。
3. 3. The solid structure of the building is impressive.
   这座建筑的坚实结构令人印象深刻。