求翻译：不能肯定产生这种差别的原因是老年人更接近于死亡，更能表现出对死亡的恐惧呢？还是因为社会文明程度的不断进步使青年人受传统死亡观念的影响较少呢？是什么意思？

Not sure the reasons for this difference is produced closer to death the elderly, better performance out of the fear of death do? Or because of the continuous progress of social civilization and the death of the traditional concept of young people have less impact it?

not sure about the reason for this difference resulting from older persons is closer to death, and more will be shown by the fear of death? Or is it because society's level of civilization to the continuous advancement of young people affected by the traditional death concept less?

Cannot definitely have this kind of difference reason is the senior citizen approaches in the death, can display to the death fear? Because the social civilized degree unceasing progress causes the young people to be few the traditional death idea influence?

Not sure if the reason for this difference is closer to the death of the elderly, better table, show the fear of death? Or is it because of social civilization and progress so that young people are less affected by the traditional concept of death?

Uncertain reasons caused this difference of age closer to death more tables show the fear of death it? Or is it because of social civilization and progress so that young people are less affected by the traditional concept of death?