the Ptolemaic system
noun/ðə ˌtɒləmeɪɪk ˈsɪstəm/
/ðə ˌtɑːləmeɪɪk ˈsɪstəm/
[singular]- the theory in the past that the earth was the centre of the universe, with other planets and stars moving around it
托勒密体系：过去的理论认为地球是宇宙的中心，其他行星和恒星在它周围移动