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B1 Intermediate
Korean
8:24
Educational
한국기술자들이 7년간 중동에 만든 건축물에 전세계 난리가 난 이유, 믿기 어려운 역대급 난이도 기술 등장 했다며 토목전문가들 한국 총집합
Learning Stats
B1
CEFR Level
5/10
Difficulty
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