实心

例句：

1. 1. The brick is a solid material that can be used to build houses.
   砖块是一种可以用于建造房屋的固体材料。
2. 2. The cake is solid and delicious.
   蛋糕是固体的，很好吃。
3. 3. The liquid was solidified by freezing.
   液体通过冷冻凝固了。