天体演化学 tiāntǐyǎnhuàxué cosmogony Definitions Defs Origin Strokes Stroke Words Sentences Sents 天体演化学 天體演化學 tiāntǐyǎnhuàxué cosmogony the study of the origin and evolution of the universe and celestial bodies
天体演化学 天體演化學 tiāntǐyǎnhuàxué cosmogony the study of the origin and evolution of the universe and celestial bodies
