一窍不通

know nothing about; utterly ignorant of

1. 他会开汽车，但他对汽车发动机的结构一窍不通。
   He can drive a car but he doesn't know anything about the nuts and bolts of the engine.
2. 他坐在那儿发表他对法制的高论，虽然他对此一窍不通。
   He sat there pontificating about the legal system although it was clear that he knew very little about it.
3. 大学的饱学之士对做生意一窍不通。
   The eggheads at the university know nothing about business.

一的英语翻译：

窍的英语翻译：

不通的英语翻译：