单词：persian knot
单词：persian knot 相关文章
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歌剧院的幽灵
Of the many puzzles mathematicians ponder, one is new ways to tie knots. There are more than six billion different types of knots that have been tabulated by mathematicians. Six billion. David Leigh, a chemist at the University of Manchester in the U
2017年Scientific American(一)月
By Ward Ana Washington, DC 14 February 2008 The U.S. Library of Congress is the world's largest library with more than 130 million items. Among its works is the largest collection of Persian language materials outside Iran. Recently, VOA's Ana Ward w
VOA常速英语2008年（二月）
U.S. Defense Secretary Robert Gates called on Persian Gulf States and other Middle Eastern powers Tuesday to do more to help stabilize Iraq and Afghanistan, and to work together to counter Iranian influence. Gates spoke in Washington to a gathering
VOA标准英语2009年(六月)
Persian Recipes Recall Lost Way of Life Donia Bijan is an Iranian-American chef who fled Iran with her family during the 1979 revolution. After settling in the United States, Bijan's mother experimented with American cooking but always incorporated f
VOA标准英语2011年(十月)
Larry和李华今天去给他们的朋友Jim买结婚礼物。Jim下个周末就要结婚。今天李华会学到两个常用语：to tie the knot和drop-dead gorgeous. LL: I can't believe Jim is goin
美国之音《流行美语》