for the glass fragment to strike her, the glass has to be smash at a precise speed and precise angle with a precise orientation, and possibly if the glass has any pre-existing defect. / f, u$ V% K# b* t, o8 s
/ D# e! t- P) X0 D, i5 ?/ wtvb now,tvbnow,bttvbthe possibiolity is endless which will make it impossible to repeat the experiment. |
發表於 2011-6-24 09:56 AM
| 
發表於 2011-6-24 08:23 PM
| 
