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Can Wood Be Stronger Than Steel? Researchers say they have created a new super-material in the laboratory. They say it is stronger, lighter and costs less than steel. 研究人员表示，他们在实验室中造出了一种新的超级材料。他们称
发表于:2018-12-08 / 阅读(34) / 评论(0)
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More recent and disturbing history will be reviewed this week by a court in Oslo. While Anders Behring Breivik will present his own warped view of reality, victims and bereaved families will confront again the terror of what actually happened. To res
发表于:2018-12-28 / 阅读(31) / 评论(0)
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