AFTER dinosaurs disappeared 65 million years ago, the world’s rhinos (犀牛), elephants and other large mammals (哺乳动物) had the Earth to themselves. They grew to as much as twice the size they are today, a new study shows.
21世纪报社版权所有，未经书面授权，禁止转载或建立镜像。 主办单位：中国日报社 Copyright by 21st Century English Education Media All Rights Reserved 版权所有 复制必究 京ICP备13028878号-12京公网安备 11010502033664号
京公网安备 11010502033664号
