They mean to be saying rather,even if there are others around you, even if there are others with you,dying is something that you're doing alone.

他们是要说，即使身边有他人的存在，即便身旁有其他人，你还是在孤独中死亡。

耶鲁公开课 - 死亡课程节选

Well,you might say,Okay,what we meant was anybody who's awake while they're dying,dies alone.

你也许会说，人在清醒时候死去是孤独的。

耶鲁公开课 - 死亡课程节选

Well,were you feeling alienated and distant during your final moments?

那你在生命最后的时刻感到孤独吗？

耶鲁公开课 - 死亡课程节选