单词：sphragistics
distinctions, etc., esp. as verifying the age and genuiness of
documents.
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' 你可能有个5年计划, 那200年计划呢? 艺术家Raghava KK描述了一幅他自己的电子传奇行动图, 即计划他在200年后会怎样被记住-并且鼓励你也做同样的事.
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It looks like he's losing his rag! John: Hello there. This is Real English from BBC Learning English. Im John. Feifei: 大家好，我是冯菲菲。在《地道英语》节目中，我们将学到一些现代英式英语的新词汇和新说法。 John: The English language is changing all
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Evan Gant使声波可视，给我们展示了cymatics的科技性和艺术性。cymatics不仅可以分析复杂的声波，例如海豚的声音，还可以创造复杂而漂亮的设计。
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The Dragon Boat Festival, also called the Duanwu Festival, is celebrated on the fifth day of the fifth month according to the Chinese calendar. For thousands of years, the festival has been marked by eating zong zi (glutinous rice（糯米）wrapped
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U.S. President Barack Obama travels Friday to Trinidad and Tobago to attend the fifth Summit of the Americas, a gathering of all hemispheric leaders minus Cuba. U.S. officials say the summit is an opportunity to forge a regional response to the glob
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The Red DragonA long long time ago most of the animals on earth looked very different from how they look now. Some were thinner, some were taller and some had more legs than they have today. The Rhinoceros and the Hippopotamus were very vain and alwa
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