The quake emerge dischanged by crust is estimated when shockburst occurs.
给出了冲击发生的临界条件；
2
If the burst does not penetrate the surface, the only other hazard will be from ground or water shock.
如果爆炸没有穿透表面，那么地面或水面冲击是唯一能够带来伤害的。
3
She realised she had to change her lifestyle when she joined a slimming club. "Weighing almost 30st was a huge shock and I burst into tears," she said. "all."