英语翻译Concatenation,meaning "linking together".is the semantic process in which the meaning of a word moves gradually away from its first sense by successive shifts until,in many cases,there is not a sign of connection between the sense that is finally developed and that which the term had at the beginning.这里until是什么用,是否和下面构成搭配.最后两个that的语法功能是否相同,如果最后的是定从,怎么还有一个which在呢

英语翻译
Concatenation,meaning "linking together".is the semantic process in which the meaning of a word moves gradually away from its first sense by successive shifts until,in many cases,there is not a sign of connection between the sense that is finally developed and that which the term had at the beginning.这里until是什么用,是否和下面构成搭配.最后两个that的语法功能是否相同,如果最后的是定从,怎么还有一个which在呢