semipetrified

例句：

1. 1. The rock was semipetrified when it was formed.
   这块岩石在形成时是半石化的。
2. 2.The river is semipetrified with stones and pebbles.
   这条河里有石头和卵石，是半石化的。
3. 3. The fossils found in the cave are semipetrified, indicating that they were once alive.
   洞穴中发现的化石是半石化的，这表明它们曾经是活着的。