TED演讲:火星现在是什么时间(3)
So the reason there's a time difference on Mars right now, 火星上的时间和我们现在的时间是不一样的, from the time that we're at is because the Martian day is longer than the Earth day. 因为火星的一天比地球要长。 Our Earth day is 24 h
Ted英语演讲:太空漫旅:布莱恩·格林恩:谈"弦理论"
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总统就职演说:美国44任总统贝拉克·奥巴马第二次就职演讲(2)
Together, we discovered that a free market only thrives when there are rules to ensure competition and fair play. 我们一起发现,只有确保竞争和公平的法规健全,自由市场才能欣欣向荣。 Together, we resolved that a great nation must care
如何克服演讲时紧张情绪
紧张Feeling some nervousness before giving a speech is natural and even beneficial, but too much nervousness can be detrimental. Here are some proven tips on how to control your butterflies and give bet
励志演讲 :未来的路(15)
The Chinese economy is of course much smaller than the United States; with a smaller motor, the world economy is likely to move forward at a slower pace. But within these limits a tectonic shift is ta