按说他是大学毕业生，但他对历史一无所知。
He was supposed to be a college graduate but he knew nothing of history.
他是个大学毕业生。
有人说，他是一个大学毕业生，因为女朋友离开了他而发疯了。
Some say he is a university graduate who lost his mind after his girlfriend left him.
有人说，他是一个大学毕业生，因为女朋友离开了他而发疯了。
Some say he is a university graduate who lost his mind after his girlfriend left him.
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