视频对话：
It's not in rigor like the rest of her body.
不像别的地方那样僵硬。
Muscle exertion at the time of death caused her hand to go into early rigor.
死亡时肌肉用力导致她的右手过早发生僵硬。
That would only happen if she was clutching something when she died.
只有在她死的时候手里握了什么东西才有可能发生。
本期学习词汇：exertion
n.发挥，用力
Mental exertion 精神努勉
Over Exertion 过度劳累
protracted exertion 积劳
例句：
1.Nothing lay ahead of us but exertion, struggle, and perseverance.
在我们的脑海里，只剩下了努力，奋斗，锲而不舍。

2.He found the physical exertion exhilarating.
他发现体力消耗令人愉悦。