They found that in the group with the lowest cholesterol, they had the lowest rate of survival.

研究人员发现，胆固醇水平最低的那组老年人存活率也是最低的。

For example, features that can increase the rate of survival, instead of the negative impact of technology.

例如，保留提高生存率等有益特征，淘汰掉技术带来的负面影响。

Without treatment, tetanus has an extremely low rate of survival.

如果不进行治疗, 破伤风的存活率极低。