Ms. BEATON: In order to, you know, pay these loans you have to specialize and subspecialize and find that one little niche where you can really make the money to be able to pay these loans and to make a, you know, a living for yourself.
NPR: Cost Of Medical School Rises In Recession
subspecialize:
sub- +? specialize
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。