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 發表於 2006-5-9 12:07 AM 
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| 7 f' r, W! ~2 |. u3 j  t....................==""Originally posted by gaye at 2006-5-8 11:35 PM:/ d3 E; h( b5 V, m" H
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 % \9 Z; T+ N' G  |但假如我唔係 North Pole jump 落...
7 G2 G, I. ^2 s& i8 N: o爬上去定爬落去係相對...............
 ) {; c7 q; |+ v: B3 Q) _7 d. }" a個方向係由您set......) U# B! A9 V" M: ?9 U5 a
 您定義north pole 係上面,0甘咪爬落law...
 2 B. M% o! a# i* `4 o  Z您定義south pole 係上面,0甘咪爬上law..., {1 Z6 H% V1 d
 
 9 O# q' N6 C. G, r/ Qhowever,點解唔simple d 呢........
 2 B! l2 l' [7 E+ x2 w* H/ L/ T# ]由地心去south pole,
 + p( `& I) H$ m: Q- l1 [2 F- ~0甘咪ok law..........
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