青金石

例句：

1. 1. The ancient city of Qingjin is known for its unique architecture.
   青金石古城以其独特的建筑而闻名。
2. 2. Theancient city of Qingjin is aUNESCO World Heritage Site.
   青金石古城是一个联合国教科文组织的世界遗产地。
3. 3. The ancient city of Qingjin has been preserved with great care bythe local government.
   青金石古城由当地政府以极大的关怀进行保护。