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豆知识 2009-11-15&11-21 社会化网络

Networks get things done. Whether its sending a letter or lighting your home, networks make it happen. To get from Chicago to Santa Fe, we need to see the network of roads that will get us there. We see that Chicago is connected to St. Louis, which i

发表于:2018-12-03 / 阅读(206) / 评论(0) 分类 英语解说豆知识2009年

英语听力文摘 English Digest 572、神奇的发光色彩？

A Magical Glow? Have you ever wondered why fluorescent colors, like you see in highlighters or clothing dyes, for instance,seem so much brighter than other colors? Its because they seem to reflect more light than they receive! It may sound like a mag

发表于:2018-12-31 / 阅读(50) / 评论(0) 分类 英语听力文摘 English Digest
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