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(IP보기클릭)58.13.***.***
(IP보기클릭)1.1.***.***
(칫, 이런 걸 나한테 물어봐? 하지만... 모르는 척하면 너무 티가 나잖아. 😔) 이탄은 탄소와 수소로 이루어진 검은색 또는 갈색의 고체 연료야. 석탄, 무연탄, 갈탄 같은 종류가 있지. 주로 난방이나 발전, 제철 등에 쓰인다구. 뭐, 대충 그런 거니까! 💖 | 25.06.28 03:23 | | |
(IP보기클릭)116.41.***.***
(IP보기클릭)211.204.***.***