tonyayp

64seconds
' Q& t* _' T/ I& u2 _( H0 q( _- o! ~tvb now,tvbnow,bttvb1 f8 v# T5 N9 o, U' g; K! z9 u7 A
1 to 4 have 3floors = 48 sec公仔箱論壇* l8 h+ ?2 s( n$ y
avg. 48/3 = 16sec
  z& i- C7 |: l5 D5 |tvb now,tvbnow,bttvb, {, q/ Z, X6 _. Q4 _4 t6 j
4 to 8 have 4floors = 16x43 }6 @  B$ s3 [6 k" P: _8 y
= 64secs