单词：calming intestinal ascarid by warming method
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Dima: Hello and welcome to 6 Minute English from bbclearningenglish.com. I'm Dima Kostenko and to help you and me with the language today is Kate Colin. Kate: Hello. Dima: Kate and I both live in London, a buzzing capital city that's no place for you
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In the Rocky Mountains of Central Colorado, the forces of nature create a landscape of alpine lakes, high-altitude ponds teeming with life and mountain meadows bursting with wild flowers. It is amidst these beautiful wildflower fields that one scien
国家地理2008年
In the Rocky Mountains of Central Colorado, the forces of nature create a landscape of alpine lakes, high-altitude ponds teeming with life and mountain meadows bursting with wild flowers. It is amidst these beautiful wildflower fields that one scient
自然百科2008年
Global warming 300 million years ago triggered the evolutionary burst which caused lizards to evolve into dinosaurs, scientists revealed today. The new research is focused on the Carboniferous Period, when the supercontinent of Pangea was covered in
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For thousands of years, whats called the Silk Road was a group of land and sea trade routes that connected the Far East with South Asia, Africa, the Middle East and southern Europe. Of course, when humans travel they carry their pathogens with them.
2016年Scientific American(八)月