单词：tubular scaffold
管子脚手架
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ROBERT SIEGEL, HOST: Tomorrow, a sculpture that was recently installed in the Minneapolis Sculpture Garden will be dismantled. Later on, it will be burned in a ceremony. This was not the original intention of the artist. As Minnesota Public Radio's E
发表于:2019-01-17 / 阅读(38) / 评论(0)
2017年NPR美国国家公共电台6月
2017年NPR美国国家公共电台6月
They were once thought to mark the outer limits, but today astronomers believe the Milky Way galaxy is much bigger than what we can see. To understand why, we will travel to the stars of the outer galactic disc. Far from our usual place in space, we
发表于:2019-01-22 / 阅读(27) / 评论(0)
自然百科2011年
自然百科2011年