单词：us optics
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They Did It With Mirrors! You can’t stand in front of the paintings of the old masters and not wonder, how did 1) Frans Hals make that lace seem so real? How did 2) Van Dyck make his armor so gleami
发表于:2018-11-28 / 阅读(146) / 评论(0)
疯狂英语2003年
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Newtons Apple Tree 牛顿的苹果树 Newton was an English physicist and mathmatician,and was the greatest scientist in his era. 牛顿是一位英国物理学家和数学家，也是他那个时代最卓越的科学家之一。 Isaac Newton was bor
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走进剑桥大学
走进剑桥大学
Its a stunning location, but its also mysterious. These stars are not just close together. They are on the move at enormous speeds. Going to the heart of a galaxy might not be the similar to going to an amusement park. The rides are some similar to h
发表于:2019-01-22 / 阅读(170) / 评论(0)
自然百科2011年
自然百科2011年