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Sue跟坐在隔壁的同事George聊天。 S: That's true...we might actually be making more work for ourselves by this constant need to stay in touch. G: If they allow cell phones on airplanes...we're going to have to hear even more hours of endless
Broadcast: Jan 22, 2003 By Marilyn Christiano VOICE ONE: This is Steve Ember. VOICE TWO: And this is Sarah Long with the VOA Special English program, Explorations. Today we tell about a scientist who
In general when we refer to a theory we mean something that's not proven yet. In science it's different, as Yael and Don discuss in this Moment of Science. Y: Today, on A Moment of Science, we clear up the difference between a scientific theory and a
JUDY WOODRUFF: But, first, this week marks the 100th anniversary of the publication of Albert Einstein's greatest work, a series of papers laying out the general theory of relativity. Gwen has a look at how it changed our understanding of the cosmos
EXPLORATIONS – Albert Einstein By Marilyn Christiano Broadcast: Wednesday, February 23, 2005 VOICE ONE: This is Steve Ember. VOICE TWO: And this is Sarah Long with the VOA Special English program, E
In 1907, or so it has sometimes been written, Albert Einstein saw a workman fall off a roof and began to think about gravity. 1907年,反正有时候书上是这么写的,有个工人从房顶上掉了下来,爱因斯坦就开始考虑引力的问