美语听力练习素材:奥巴马接见NCAA女篮冠军球队

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例句：Scientists transmuted matter into pure energy and exploded the first atomic bomb.
科学家将物质转化为纯粹的能量，引爆了第一颗原子弹。

2.rain down 雨点般地落下来

例句：Bombs rained down on the unarmed common people.
炸弹像雨点一般落在手无寸铁的老百姓身上。

3.pay a visit 访问

例句：Perhaps you would like to pay a visit to London.
也许，您乐意去游览一下伦敦。

4.national championship 全国冠军

例句：He has won a national championship in the dashes.
他赢得了在短跑方面的全国冠军。