64seconds
, X; w$ t9 c% V: q7 d/ B2 C t
/ d, g( D/ a; x8 X; [+ A" x5 I1 to 4 have 3floors = 48 secTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。* }6 H2 D. z% d6 b e6 H3 i$ g: q
avg. 48/3 = 16sec
2 H7 ]8 S) \, \
; |* z# f4 T+ G" h0 X* R4 to 8 have 4floors = 16x4* U/ B+ `5 r8 [- v# x3 q
= 64secs |