self-taught
⇒ 他对家电维修可谓无师自通。
You could say he is self-taught when it comes to repairing electrical household goods.
英语词典包含298861条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。