mamasing

I agree, I heard that astronaut cannot pee or shit while they are in space.
3 I' I: a* a6 X7 [* o4 n5.39.217.76It must be a painful joruney.公仔箱論壇5 l# v- Z; k+ {6 f. K% l  u, |
Oh BTW, if your lecturer talks about "地心引力" in your Physics class.tvb now,tvbnow,bttvb3 T, ]3 b+ l% [" f8 R& K$ g2 _
I suggest you pack and pick other subject instead, if you really like Physics,
9 B7 ~) [- T/ o' Y" T. q& s$ Wtvb now,tvbnow,bttvbyou need to switch school.5.39.217.76& B2 s3 O. t" V( [' R' G: R
There is no 地心引力, but "gravitational" force only.公仔箱論壇$ T2 u, R3 j# ]$ S) {0 V8 w
A simple meaning of Gravitational force = the force of attraction between any
7 N/ W" ?  {  d$ V& K+ ]tvb now,tvbnow,bttvbtwo masses.# g' L& g; v1 z4 ]+ o
5.39.217.76; z5 y( M, s* k6 u! M9 @
Gosh, I got fooled by my HK Physics teacher many years ago.