tutorial管 （630） 7

9 mins 54 secs

10 mins 1 sec

11 mins 12 secs

9 mins 46 secs

14 mins

1 min 47 secs

14 mins

11 secs

14 mins 1 sec

13 mins 23 secs

12 mins 27 secs

9 mins 50 secs

15 mins 30 secs

48 mins 36 secs

15 mins 5 secs

1 hour 40 mins 30 secs

6 mins 6 secs

7 mins 14 secs

1 hour 32 mins

2 mins

6 mins

2 mins

5 mins

14 mins 37 secs

12 mins 57 secs

10 secs

24 mins 48 secs