5-乙-2-甲吡啶

皮柯.耶尔:家在何方?

越来越多的人居住在异国他乡。有三到四个身世来源的作家皮柯．耶尔(Pico Iyer) 思索着家的意义，旅行的乐趣和静止的平和。

发表于:2018-12-09 / 阅读(51) / 评论(0)

TED公开课:地球村

英语听力—环球英语 1406 Traffic Problems

Voice 1 Welcome to Spotlight. I'm Liz Waid. Voice 2 And I'm Mike Procter. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 The sounds of traffic! You can h

发表于:2018-12-19 / 阅读(53) / 评论(0)

环球英语 Spotlight

SCIENCE REPORT - New Cold Drug

SCIENCE REPORT - January 2, 2002: New Cold Drug By Nancy Steinbach This is the VOA Special English Science Report. American researchers say they have developed the first drug that can effectively trea

发表于:2019-01-07 / 阅读(60) / 评论(0)

科技之光

日本新潮流:仿真猫咪挎包备受推崇

Japanese designer Pico has combined her love of cats and handbags to create highly realistic purses. The bags are shaped like kitties with whiskersand tails. Each cat-bag is priced at about $500 to $700, but buyers dont seem to mind the steep pricing

发表于:2019-02-07 / 阅读(41) / 评论(0)

阅读空间

万物简史第225期:把铅撵出去(14)

By counting back through these layers and measuring the amount of lead in each, he could work out global lead concentrations at any time for hundreds, or even thousands, of years. The notion became the foundation of ice core studies, on which much mo

发表于:2019-02-17 / 阅读(59) / 评论(0)

万物简史

TED演讲获奖青少年,科技在行动(1)

If you were going to a restaurant and wanted a healthier option, 如果你去饭店，你想吃得健康一点， which would you choose, grilled or fried chicken? 你会选择哪种食品呢，烤鸡还是炸鸡？ Now most people would answer grill

发表于:2019-02-21 / 阅读(68) / 评论(0)

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activated zinc oxide

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airborne intercept (ai)

backward search for beginning of program