印材有铜印、骨印、牙印、陶印以及泥封（图六）等。

They were made of bronze, bone, tooth and "Mud Cover" (picture 6), etc.

youdao

印材有铜印、骨印、牙印、陶印以及泥封（图六）等。

They were made of bronze, bone, tooth and "Mud Cover" (picture 6), etc.

youdao