Professor Ron Clarke of Wits University in South Africa recently took CNN deep inside the Sterkfontein Cave at the Cradle of Humankind World Heritage Site to expose one more example.
CNN: African roots of the human family tree
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。