Original: Sugiyama: 111 Teotihuacanos practiced human sacrifice: human bodies and animal sacrifices have been found during excavations of the pyramids at Teotihuacan; and it is believed that when the buildings were expanded, sacrifices were made to dedicate the new building.
Simplified: Human bodies and animal sacrifices have been found during excavations of the pyramids at Teotihuacán. When the buildings were expanded, sacrifices were probably made to dedicate the new building.