万花筒 2010-11-07&11-09 普通感冒有望治愈？

Sneezing, coughing, and sniffing. Welcome to winter and the common cold virus, a cure for which has eluded for years. But now a major breakthrough by scientists in Cambridge University brings that cure a step closer, as they've discovered a new way t

发表于:2018-12-11 / 阅读(42) / 评论(0)

万花筒2010年

60秒科学:先进啊,古代就有了四环素

Evidence mounts that ancient Nubian brewers purposely made beer so that it contained a dose of antibiotic tetracycline. Christopher Intagliata reports 有证据表明努比亚的啤酒制造者故意在啤酒中加入抗菌四环素。 In 1980, a sci

发表于:2019-01-02 / 阅读(100) / 评论(0)

60秒科学

SSS 2010-09-06

In 1980, a scientist looking at bone fragments under an ultraviolet microscope noticed the bones were glowing greena hallmark of the antibiotic tetracycline. The drug latches onto calcium and gets deposited in bone. Nothing unusual. Except these bone

发表于:2019-01-08 / 阅读(46) / 评论(0)

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VOA标准英语2012--Nano Tool Watches Teardrop Protein Destroy Bacteria

Nano Tool Watches Teardrop Protein Destroy Bacteria About a hundred years ago, a Scottish biologist discovered that proteins called lysozymes in human tears can kill bacteria. Scientists have studied the enzyme extensively, but molecular biologist Gr

发表于:2019-01-13 / 阅读(40) / 评论(0)

VOA标准英语2012年(一月)

英语听力：自然百科地中海净化行动

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发表于:2019-01-22 / 阅读(51) / 评论(0)

自然百科2008年

老友记精校版第1季第17期:参加助产培训班(5)

Monica: Actually, we were going to have lasagna. 实际上，我们本来是要吃千层面的。 Mr. Geller: oh, I love lasagna. 哦，我喜欢千层面。 Monica: But now we are not having it. 不过我们现在没有了。 Mrs. Geller: Then why y

发表于:2019-01-30 / 阅读(76) / 评论(0)

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