Lecture_1_2_일반생물2_SMWU_2020_S

New channel Sunghan Kim: title sample judged 'whole' (Full-length recorded university biology lectures across multiple semesters, consistently educational with no entertainme); passed a second screen for sellers/exam-prep/re-uploads; 2 of 3 sampled transcripts showed teaching, 1 not; titles picked one by one, checked strictly; oEmbed verified.