"싸늘히 식어진 따스한 온기와 무참히 짓밟혀진 선명한 그 꿈들은 더 이상 되돌릴 수 없는 아득한 곳으로 흩어졌지만“ It's not a full sentence but a subordinate clause like "Even though ...". It may be translated as: - The warmth that went cold as dead, and the vivid dreams that got ruthlessly trampled on. Even though they all scattered away to distant places beyond any hope of coming back.