talk is an easy part proof is very difficult....
/ ?- T; x( k2 {9 l公仔箱論壇my can can fly
# y6 H' ?9 k4 U. ]# V: v+ Bmy dog can sing
8 G: B) O ~* H, U( p0 w4 g& d公仔箱論壇but i haven't see a lost UFO at my garden b4/ G }$ @" ^: n6 s9 V; s9 s& c
proof pal proof |