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- 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.
- 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.
- 大学的饱学之士对做生意一窍不通。
The eggheads at the university know nothing about business.
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