乔治华盛顿大学的人类学家艾琳·玛丽·威廉姆斯，试图找出进化是如何发生的，制造工具是怎么帮助塑造我们的手和手腕的。
At George Washington University, anthropologist Erin Marie Williams is trying to find out how that evolution took place. How did tool-making help shape our hands and wrists?
该研究论文的撰稿人、华盛顿大学博士后玛丽·佩克和她的同事凯瑟琳·罗森着手于研究名为“介质”的信息碎片。
The study author Mary Pyc, a postdoctoral fellow at Washington University in St. Louis and her co-author Katherine Rawson investigated pieces of information called "mediators."
该研究论文的撰稿人、华盛顿大学博士后玛丽-佩克和她的同事凯瑟琳-罗森着手于研究名为“介质”的信息碎片。
The study author Mary Pyc, a fellow at Washington University in St. Louis and her co-author Katherine Rawson investigated pieces of information called "."
应用推荐