cheondongseol
Ptolemaic system
système ptolémaïque ; modèle ptolémaïque
천동설은 고대 그리스의 우주론 중 하나입니다.
Cheondongseol-eun godeu geuliseu-ui ujuron jung hana-imnida.
The Ptolemaic system is one of the ancient Greek cosmologies.
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