Paraphrase:
If you want to learn some specialized knowledge, one of the ways is to attend graduate school. But you have to pay for it yourself if you want to continue your study after graduating from the college, and you may not necessarily be rewarded as you wish.
如果你想学点专业知识,一个方法就是直接加入研究所。但是,如果毕业后你想继续深造的话,你必须自己付学费。并且,你所得到的,可能不如你的期待。
Paraphrase:
If you want to learn some specialized knowledge, one of the ways is to attend graduate school. But you have to pay for it yourself if you want to continue your study after graduating from the college, and you may not necessarily be rewarded as you wish.