An effigy mound is a raised pile of earth built in the shape of a stylized animal, symbol, religious figure, human, or other figure. Effigy mounds were primarily built during the Late Woodland Period (AD 350-1300).
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。