冲沙道

美国科学60秒 SSS 2012-12-20

This is scientific American 60 seconds science. I'm hop kin. just take a minute. Thinking of eating out over the holidays, while you might consider bring your own plate, because the new study shows the typical dishwashing procedures used by most rest

发表于:2018-12-02 / 阅读(42) / 评论(0)

Scientific American(十二)月

听美文故事记6级单词06-09

9.The Great Lakes The Great Lakes are the greatest wonder of America. It is the largest group of lakes in the world and the biggest body of fresh water. It is hard to grasp that a land should contain several freshwater seas so big that a ship can ste

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听美文故事记6级单词

EXPLORATIONS - Erie Canal

EXPLORATIONS - Erie Canal By Jerilyn Watson Broadcast: Wednesday, November 10, 2004 (MUSIC) VOICE ONE: I'm Shirley Griffith. VOICE TWO: A picture of the Erie Canal. (Picture - DOT) And I'm Steve Ember

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Explorations

Security is Major Concern Along Panama Canal

Broadcast: Jan 29 2003 Since the terrorist attacks of September 11, 2001, authorities in Panama have stepped up security at their nation's 1) transoceanic canal and they are now working closely with i

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VOA2003（上）-商业论坛

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By Anjana Pasricha New Delhi 22 September 2007 A political storm is raging over a project to build a shipping canal in southern India. As Anjana Pasricha reports from New Delhi, Hindu activists say the canal will destroy a bridge they believe was bui

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2007年VOA标准英语（九月）

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The Dujiangyan Dam, 45km north of Chengdu, is an ancient technological wonder of the country. More than 2000 yers ago, Li Bing(250-200BC), as a local governor of the Shu State, designed this water control and irrigation dam and organized thousands of

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accelerator DOTG

achromotrichia

actual length of roller

adult-life

analytical expression

angle of crab

Ansical

Anzelberg

aperiodic pulse train

arabis morrisonensis hay.

automatic gate