单词	Ptolemaic system
释义	Ptolemaic system noun : the system of planetary motions according to which the earth is at the center with the sun, moon, and planets revolving around it and each orbit except for the sun and moon is composed of a principal circle upon which moves a smaller circle carrying the planet compare copernican system, deferent, eccentric entry 2 sense 2, epicycle Word History Etymology after Ptolemy fl 2d century a.d. who maintained it
随便看	psec Psechridae Psedera psel pselaphid Pselaphidae pselaphognath Pselaphognatha pselaphognathous Pselaphus psellisms psellismuses pseneses psenesses psephism psephisma psephismas psephismata psephisms psephite psephites psephitic psephological psephologies psephologist

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