as hard as granite

例句：

1. 1.The car was so damaged that it could not be driven again.
   这辆车被损坏得无法再开。
2. 2. He is as hard as granite, never giving up easily.
   他非常坚定，从不轻易放弃。
3. 3. The construction project was completed as hard as a granite block.
   这个建筑项目完成得就像一块花岗岩一样坚固。