学习如何说不
Learn How to Say No We've all been taught that we should help people. It is the right thing to do and will make us popular with others. It may even win us favors in return. However, we must be realist
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Thank you very much. That's so nice. A lot of spirit. Great spirit for this country. Thank you, all. We have tremendous spirit and I want to thank you. We had a wonderful election, didn't we? And I sa
奥巴马总统每周电台演讲(2016年2月27日)
Hi, everybody. This week, we continued our mission to destroy ISIL. This remains a difficult fight, and the situation in Syria and Iraq is incredibly complex. ISIL is entrenched, including in urban ar
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TED演讲之入门 宏观历史(2)
So here's a great puzzle: in a universe ruled by the second law of thermodynamics, 所以,这就是个大谜团:在宇宙中,在被热力学第二定律规范下, how is it possible to generate the sort of complexity I've described, 怎么样才有可能产生这种我刚才论述的