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让我看看
what???let me see~~
019: :019:
let me have the answer
单向路程x,来回时间分别为十分之x,十五分之x公仔箱論壇9 F" ]- A/ `5 \) w# n  }% w
总路程2x除以来回时间的和
2 V, j! @: f7 V7 K8 B  w; O- m12
thank you
see see
http://klyriz4u.blogspot.com/
12.5?
cccccc
12.5 ??
睇吓點做
thank you very much
thank you very much
thank you very much
thank you very much
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