TED演讲:为什么头盔不能预防脑震荡?(3)
So one thing that I do agree with, and I think most experts would, is that the brain does have these dynamics. 其中一点我个人是同意的,我相信绝大多数专家也同意,那就是脑部确实有这样的动态。 It does lag behind the skull and then catch up an
奥巴马演讲 Filibustering Recovery
Remarks of President Barack ObamaWeekly AddressThe White HouseJuly 17, 2010 This week, many of our largest corporations reported robust earnings – a positive sign of growth. But too many of our
奥巴马演讲附 Cutting Waste, Investing in the Future
Remarks of President Barack ObamaAs Prepared for DeliveryMiami, FloridaMarch 5, 2011 I’m talking with you from Miami, Florida, where I’m visiting Miami Central High School, a school that&r
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奥巴马每周电视讲话:总统呼吁对叙利亚采取军事行动
Almost three weeks ago in Syria, more than 1,000 innocent people-including hundreds of children-were murdered in the worst chemical weapons attack of the 21st century. 大约三个星期前,叙利亚包括数百名儿童在内的超过1000名无辜平民