VOA慢速英语:American History Series: Robert E. Lee's Surrender

nothing but除了…什么也不,只有,不外乎

例句：He's nothing but a stuffed shirt.
      他不过是个妄自尊大的人。

      Nothing but a miracle can save her life.
      只有奇迹才能挽救她的生命。

2.Early the next morning, Lee tried to break through the ring of Union soldiers that surrounded his army.

break through突破,冲破;战胜,克服

例句：Demonstrators tried to break through the police cordon.
      示威群众企图突破警察的封锁线。

3.He said later that he did so because he was finding it difficult to bring up the question of surrender.

bring up教育,培养,提出

例句：The lawyer brought up accusations against the defendant.
      律师对被告提出了指控。