ptolemaic system
美
英
- 网络托勒密之天动学说；托勒密体系；天动说
n. | 1. a theory of planetary motion developed by Ptolemy that held that Earth was at the center of the universe with the Sun, Moon, and planets revolving around it. |
英汉词典包含292483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。