大学时期的巴拉克·奥巴马不知道自己将是美利坚合众国第一位黑人总统。

At college, Barack Obama didn't know that he will be the first black president of the United States of America.

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上大学时，巴拉克·奥巴马并不知道他将成为美利坚合众国的第一位黑人总统。

At college, Barack Obama didn't know that he was to become the first black president of the United States of America.

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萨科齐是第一位战后出生的法国总统，其外祖父是来自萨洛尼卡的犹太人。

Mr Sarkozy, whose maternal grandfather was a Jew from Salonika, is the first French president born after the war.

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