1. People are always talking about 'the problem of youth'.
人们总是在谈论“青年问题”。
always通常带有感情色彩，表示高兴，气愤，抱怨等，可以通过上下文语境来判断。
2. If there is one — which I take leave to doubt — then it is older people who create it，not the young themselves.
如果这个问题存在的话——请允许我对此持怀疑态度——那么，这个问题是由老年人而不是青年人造成的。
which I take leave to doubt是定语从句，修饰one（指的是Problem）。is……，not……，这种形式可以换成：Not……But……。
3. Let us get down to fundamentals and agree that the young are after all human beings — people just like their elders.
让我们来认真研究一些基本事实：承认青年人和他们的长辈一样也是人。
after all 毕竟，无论如何
例句：You should take care of her, after all she is your relative.
你应该照顾她，毕竟她是你的亲戚。
