单词：metalloaminopeptidases
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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As Valentines day approaches, remember, its the thought that counts. Just ask a decorated cricket. Because according to a study published in the January
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And there's nowhere I'd rather be 我愿浪迹寰宇世界 When they take with the one hand and take with the other 可他们将我的双手禁锢在锁铐里 On the day all the hands go free 终于在那一天我重获了自由 And the sun's gonna s
听歌学英语
By Gary Thomas London 23 August 2006 The nations that offered incentives to Iran to get it to halt nuclear enrichment activity are studying Iran's response and pondering what to do next. While details of the response have not been made public, Iran
2006年VOA标准英语（八月）
By Amanda Cassandra New York 29 November 2006 Gold prices have reached record highs this year, fueling new interest in gold as an investment. But the allure extends far beyond its monetary value. Its importance as a natural resource, as a commodity
2006年VOA标准英语（十一月)
Science and technology 科学技术 Creutzfeldt-Jakob disease 克雅氏病 Breaking down the barrier 攻破屏障 A glimmer of hope for a drug that treats disease caused by prions 药物治疗朊病毒感染疾病的一线希望 THE epidemic of mad-c
经济学人科技系列
Science and Technology Creutzfeldt-Jakob disease Breaking down the barrier 科技 克雅氏病 攻破屏障 A glimmer of hope for a drug that treats disease caused by prions 药物治疗朊病毒感染疾病的一线希望 THE epidemic of mad-cow dis
经济学人科技系列