单词:geodesic circle of a surface
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The Moon We find that the moon is about 239,000 miles (384,551 km) away from the earth, and, to within a few thousand miles, its distance always remains the same. Yet a very little observation shows that the moon is not standing till. Its distance fr
Broadcast: May 18, 2003 By Marilyn Christiano VOICE ONE: I'm Phoebe Zimmermann. VOICE TWO: And I'm Steve Ember with the VOA Special English program People in America. Today we tell about an unusual ma
VOICE ONE: I'm Phoebe Zimmermann. VOICE TWO: And I'm Steve Ember with the VOA Special English program People in America. Today we tell about an unusual man who had many abilities. (MUSIC) VOICE ONE: R. Buckminster Fuller Building designer. Engineer.
This spiritual ambition and mastery of nature could be fundamental to the creation of Stonehenge. This is clearly the best view we ever have of Stonehenge from above. You can see the other parts of the monument, things like the ditch, which run aroun
25 大气层中臭氧正日渐稀薄 DATE=3-21-01 TITLE=SCIENCE REPORT - (1)Springtime Ozone Loss BYLINE=George Grow (Start at 1'00