The action of turning over and over, rotating about an axis; the action or an act of travelling or covering distance in this manner. Also with about.
The action of rolling or causing to roll; revolution combined with progression.
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。