Array ( [0] => Array ( [title] => L29A [link] => https://www.youtube.com/embed/ZaK-yrbv9Mc ) [1] => Array ( [title] => L29B [link] => https://www.youtube.com/embed/OR2mg7lGw3g ) [2] => Array ( [title] => L29C [link] => https://www.youtube.com/embed/pg60r4T9Zrc ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第29講 Subdivision & Platonic Solids