奥巴马演讲:奥巴马公布抗击艾滋病战略
The President speaks about the just released National HIV/AIDS Strategy and his commitment to focusing the public's attention on ending the domestic HIV epidemic. 【Transcript】 THE PRESIDENT: Hello, ev
Ted英语演讲:美妙的神经系统:艾略特·克兰:慢性疼痛之谜
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Ted英语演讲:会心一笑:Rives 的凌晨4点
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TED演讲:如何安全发送色情短信(6)
As NYU legal scholar Helen Nissenbaum tells us, 正如纽约大学法学者Helen Nissenbaum告诉我们的, we have laws and policies and norms that protect all kinds of information that's private, 我们有着法律、政策以及准则,来保护各类私人信息, and i
TED演讲:对最近气候趋势的警告(4)
Frosty the coal man is a jolly, happy soul. 雪白煤碳先生是个快乐的精灵。 He's abundant here in America, and he helps our economy grow. 它在美国产量丰富,并且帮助我们的经济成长。 Frosty the coal man is getting cleaner everyday. 雪白的煤碳先生每