致死因子

例句：

1. 1. The sudden drop in temperature caused the death of many animals.
   突然的温度下降导致了许多动物死亡。
2. 2. The researcher found a lethal factor in the bacteria that could cause disease.
   研究者发现细菌中的一种致命因素，可以引起疾病。
3. 3.The toxic gas was a lethal factor in the chemical factory explosion.
   有毒气体是化工厂爆炸中的致命因素。