But the notion of a shrap division between the working young and the idle old misses a new trend,the growing gap between the skilled and the unskilled.

这里的红色部分该如何翻译是好？不是很能理解这句话想表达的含义，还望老师看看

原文出自这里的第三段处第一句话：http://www.100xuexi.com/question/questiondetail.aspx?tid=2979&pid=72d340cc-bc46-4922-9b04-43c0b83ba8a3&qid=9e31eec0-2e80-48a2-895d-787c44ac6d00