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.
T/ A+ B' c% E0 z7 g- y0 N& {/ D公仔箱論壇
5 a* O1 t3 h* |1 p+ s4 |4 o- Qthe possibiolity is endless which will make it impossible to repeat the experiment. |