1.that is because the earth is round.* e7 e( \2 e& G/ t, @6 q
2.it is not a matter of adding two numbers in which order.* x' N/ ^: _. y5 P
3.it is far close to our observation.
: a% w# J3 U3 h+ s4.unlike our imagination,the real direction is adverse.
! J9 }3 u- R: z5.there is a long-standing dispute on boundary between these two countries. |