mamasing

I agree, I heard that astronaut cannot pee or shit while they are in space.TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。; k7 x0 w4 m1 U6 n
It must be a painful joruney.7 V5 V& e5 b. H5 H# ^( W
Oh BTW, if your lecturer talks about "地心引力" in your Physics class.公仔箱論壇: h: r6 M- |$ v4 o
I suggest you pack and pick other subject instead, if you really like Physics,
8 I9 K' s+ e5 w" A7 r- V) Ctvb now,tvbnow,bttvbyou need to switch school.TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。% i9 b0 {3 ]/ v" Q) z% Y+ S) f( h
There is no 地心引力, but "gravitational" force only.tvb now,tvbnow,bttvb' y. n$ a3 V/ K! I6 D* I
A simple meaning of Gravitational force = the force of attraction between any
  U& }& W5 N7 Ltvb now,tvbnow,bttvbtwo masses.公仔箱論壇  a9 Z# v* m9 N! D

0 n( Z/ W: q0 Z2 ^% g1 m) ]Gosh, I got fooled by my HK Physics teacher many years ago.