gaye

Originally posted by fung at 2006-5-8 11:22 PM:' v0 }4 j; f, s% m" e. {! d: m

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5 u4 h3 K/ a3 B+ q  T  D但假如我唔係 North Pole jump 落去 , 係慢慢爬落去 , 咁到達地心時 , 再向 South Pole 出發個時, 係爬上去定爬落去 ? : ]& R: `0 R7 _$ @$ q# H2 Z

) K2 y; Z0 _. d$ t; U[ Last edited by gaye on 2006-5-8 at 11:36 PM ]

gaye

Originally posted by fung at 2006-5-9 12:03 AM:
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咁我諗要睇你點define上同落4 A7 R, h- ~& y6 s$ S8 E
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沒錯 , 上同下係睇點 define , 冇 absolute , 但人在北極向地心出發(向下挖) , 人的感覺必定是向下前進吧 , 但人到了地心 , 再向南極出發的時候 , 人的感覺會是向上 or 向下前進 ? (假設個人冇掉轉到身)