know nothing about; utterly ignorant of

1. 他會開汽車，但他對汽車發(fā)動機的結(jié)構(gòu)一竅不通。
   He can drive a car but he doesn't know anything about the nuts and bolts of the engine.
2. 他坐在那兒發(fā)表他對法制的高論，雖然他對此一竅不通。
   He sat there pontificating about the legal system although it was clear that he knew very little about it.
3. 大學的飽學之士對做生意一竅不通。
   The eggheads at the university know nothing about business.

一的英語翻譯：

竅的英語翻譯：

不通的英語翻譯：