know nothing about; utterly ignorant of

1. 他會(huì)開汽車，但他對(duì)汽車發(fā)動(dòng)機(jī)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(duì)法制的高論，雖然他對(duì)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(xué)的飽學(xué)之士對(duì)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：