The sociologist Zygmunt Bauman wrote that in modern life, there is always a suspicion … that one is living a lie or a mistake; that something crucially important has been overlooked, missed, neglected, left untried and unexplored; that a vital obligation to one’s own authentic self has not been met, or that some chances of unknown happiness completely different from any happiness experienced before have not been taken up in time and are bound to be lost forever.

参考译文：社会学家齐格蒙德鲍曼写道，在现代生活中，总是有一种猜疑…。一个人活在谎言或者错误中；一些极其重要的东西被忽略/忽视/未被注意到、错过、忽视/疏忽/疏漏、未尝试和未探索/未想到的;/未考虑过的;；对自己真实的自我的一项重要义务尚未实现，或者一些完全不同于以往所经历的任何幸福的未知幸福的机会没有及时得到利用，注定会永远失去。

take up 表示占用，利用的意思，相当于“make use of/use/employ ”

主动take up sth=被动sth be taken up