纽约西奈山医学院蒂施癌症研究学院保罗·波费塔也发现大量进食水果和蔬菜只对癌症有微乎其微的抑制作用。
Paolo Boffetta from the Tisch cancer Institute at Mount Sinai School of Medicine in New York found that eating a lot of fruit and vegetables has only "a very modest" protective effect against cancer.
今天，国土安全部长珍妮特·纳波利塔诺在国会山就周一爆炸案的调查工作向议员做了简要陈述，这起爆炸案造成三人死亡，170余人受伤。
Homeland security secretary Janet Napolitano brief lawmakers on Capitol Hill today about the investigation into Monday's bombings that killed three and wounded more than 170.
此外，其它最值得推荐的旅游景点还有位于波因特公园的观光塔——“华盛顿山”。
Another of the most popular things to do in Pittsburgh is a trip to Mt.
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