wilsondex

让我看看

坚强的肾

what???let me see~~

yumikocc

019: :019:

savioleung

let me have the answer

niudatui

单向路程x，来回时间分别为十分之x，十五分之x2 d1 ?8 }9 c# l+ x9 c5 X2 A
总路程2x除以来回时间的和
2 R: }4 s" \$ y12

oiu789

thank you

klyriz

see see

hhbb8833

12.5?

carsonchan

cccccc

vbewnnxu

12.5 ??

WilliamIsGood

睇吓點做

bigfatfat

thank you very much

bigfatfat

thank you very much

bigfatfat

thank you very much

bigfatfat

thank you very much