能否解释一下在线的计时方式

虎吼西风

我很在意我在线的时间，我注意到只有我发帖的时候才给我计时

天豕爱美丽

是呀，羊兄，到底怎么算的，我泡了一天，也不给我点银子！

华胥

灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌水水水水灌灌灌灌灌  (*)#$@&%#*K:JFD:L()$
灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌水水水水水水水水水灌灌灌灌  #(_@s4fK:JFD:L
( }3 S- k% w2 f# h# ^灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌水水水水水水水水水水水水水水水灌灌灌灌  %#*(我)$K:JFD:L(
, p. T' [! C; [& n8 T4 s4 [, V8 B! J灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌水水水水水水水水水水水水水水水灌灌灌灌灌灌  ckjluK:JFD
1 z: H' j: T1 \- b灌灌灌灌灌灌灌灌灌灌灌水水水水灌水水水水水水水水水水水灌灌灌灌灌灌灌灌灌灌  a21fd3s1K:JFD:L(
灌灌灌灌灌灌灌灌水水水水水水水灌水水水灌灌水水水水水灌灌灌灌灌灌灌灌灌灌灌  *$#什21f3dsaK:JFD:L()$#_
灌灌灌水水水水水水水水水水水水灌灌灌灌灌灌水水水水灌灌灌灌灌灌灌灌灌灌灌灌  (么$*@#(_@s4K:JFD:L()$#_
- U- r: |7 s$ S4 y灌水水水水水水水水水水水水水水灌灌灌灌灌灌水水水水灌灌灌灌灌灌灌灌灌灌灌灌  45%#(么$*@#(K:JFD:L()$#_
+ X( _) t: L1 h7 Q2 _. d灌水水水水水水水水水水水水灌灌灌灌灌灌灌水水水水水水水水水水水灌灌灌灌灌灌  poej道h$K:JFD:L(
灌水水水水水水水水水水水水灌灌灌灌灌灌水水水水水水水水水水水水水水灌灌灌灌  1%$#(*$#蔏:JFD:L()
/ c! F$ i, ?: B8 c9 _! i灌灌水水水水水水水水水水灌灌灌灌灌水水水水水水灌灌灌水水水水水水水灌灌灌灌  *($(臟:JFD
5 J* {# [3 L" F) ^+ a9 U& N4 Y3 K& N灌灌灌灌灌灌灌灌水水水水灌灌灌灌灌水水水水灌灌灌灌灌灌水水水水水灌灌灌灌灌  
! [& q6 z! r/ p4 r7 {灌灌灌灌灌灌灌灌水水水水灌灌灌灌水水水水灌灌水水灌灌灌水水水水水灌灌灌灌灌  fd3s1fd知1fK:JFD:L()$#
灌灌灌灌灌灌灌灌水水水水灌灌灌灌水水水水灌灌水水水水灌水水水水水灌灌灌灌灌  3ds也f12dsK:JFD:L()$
9 H2 h4 {5 T7 r( n6 J( l灌灌灌灌灌灌灌灌水水水水灌灌灌灌水水水水灌灌水水水水灌水水水水水灌灌灌灌灌  545%#(么K:JFD:L(
灌灌灌灌灌灌灌灌水水水水灌灌灌灌水水水水灌灌水水水灌灌水水水水水灌灌灌灌灌  vmmvckjluK:JFD:L()
0 u1 Z5 f# Z" c9 K. h8 G4 E灌灌灌灌灌灌灌灌水水水水灌灌灌灌水水水水灌灌水水水灌灌水水水水水灌灌灌灌灌  ?fkjhfjouiK:JFD:L()$#
  e7 n! b% n$ w3 K. X灌灌灌灌灌灌灌灌水水水水灌灌灌灌水水水水灌水水水水灌灌水水水水水灌灌灌灌灌  re432K:JFD
灌灌灌灌灌灌灌灌水水水水灌灌灌灌水水水水灌水水水水灌灌水水水水水灌灌灌灌灌  kcvmmvckjluK:JFD:L()$#
/ G' i8 P( I1 ]9 }& e$ `/ T灌灌灌灌灌灌灌灌水水水水灌灌灌灌水水水水灌水水水水灌灌水水水水水灌灌灌灌灌  %#(么$*@#(_@K:JFD:L()$#_
灌灌灌灌灌灌灌灌水水水水灌灌灌灌水水水水灌水水水水灌灌水水水水水灌灌灌灌灌  45%#(么$*@#K:JFD:L()$#
灌灌灌灌灌灌灌灌水水水水灌灌灌灌水水水灌灌水水水水灌灌水水水水水灌灌灌灌灌  娱乐eK:JFD
灌灌水水灌灌灌水水水水水灌灌灌灌水水水灌灌水水水灌灌灌水水水水水灌灌灌灌灌  
灌灌水水水水水水水水水水灌灌灌灌灌水水灌灌水水灌灌灌灌水水水水水灌灌灌灌灌  #(*)#$@K:JFD:L
灌灌灌水水水水水水水水水灌灌灌灌灌灌灌灌水水水灌灌灌灌水水水水灌灌灌灌灌灌  
灌灌灌灌灌水水水水水水水灌灌灌灌灌灌灌灌水水水灌水水水水灌灌灌灌灌灌灌灌灌  vckjlur覭:JFD:L(
灌灌灌灌灌灌水水水水水水灌灌灌灌灌灌灌水水水水灌灌水水水水灌灌灌灌灌灌灌灌  ($(哦*K:JFD:
灌灌灌灌灌灌灌灌灌水水水灌灌灌灌灌灌水水水水水灌灌灌水水水水水水水灌灌灌灌  ierpoej道K:JFD:L()
灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌水水水水水水灌灌灌灌灌水水水水水水灌灌灌灌  ds不21fdK:JFD:L(
2 E6 ?- D, j. a9 x# G灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌水水水水水水灌灌灌灌灌灌水水水水水水水灌灌灌  槔謊wioK:JFD:L()$
灌灌灌灌灌灌灌灌灌灌灌灌灌灌水水水水水灌灌灌灌灌灌灌灌灌水水水水水水灌灌灌  
灌灌灌灌灌灌灌灌灌灌灌灌灌水水水水水灌灌灌灌灌灌灌灌灌灌灌水水水水灌灌灌灌  
" h, d( ~! ?1 a( U7 M0 D. c灌灌灌灌灌灌灌灌灌灌灌灌水水水灌灌灌灌灌灌灌灌灌灌灌灌灌灌灌水水水灌灌灌灌