space flight researchs are constantly studying how different materials burn, and this kind of research may have a big impact on the future of earth.
해석해주시고 구조 좀 자세히 설명해 주시면 고맙겠습니다!!
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태양 2022.08.03 댓글 0
태양 2022.08.03 댓글 0
space flight researchs are constantly studying how different materials burn, and this kind of research may have a big impact on the future of earth.
해석해주시고 구조 좀 자세히 설명해 주시면 고맙겠습니다!!