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• 다윈의 생각이 옳았다. 전 세계 계단식 비탈 지형은 초식동물 때문 Each terracette step consists of a flat tread and a sloped riser, with adjacent steps often interconnected (A) A diagram illustrating a hillside with major slope angle , featuring terraced steps made of treads blog.naver.com · 2026.07.31

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