lecture管 （801） 19

1 min 39 secs

2 mins 5 secs

5 mins 6 secs

1 min 50 secs

5 mins 15 secs

8 mins 14 secs

14 mins 14 secs

8 mins 44 secs

12 mins 25 secs

5 mins 55 secs

5 mins 55 secs

6 mins

8 mins 42 secs

2 mins 2 secs

8 mins

9 mins 14 secs

25 mins 3 secs

5 mins 28 secs

5 mins 47 secs

19 mins 55 secs

12 mins 41 secs

7 mins 27 secs

10 mins

4 mins 59 secs

21 mins 5 secs

12 mins 51 secs

10 mins 52 secs