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(单词翻译:双击或拖选)
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute.
For years, scientists and physicians have been up in arms about the rise in antibiotic1 resistance. Seems that many bacteria, devious2 buggers that they are, are able to share genetic5 information—including, say, the instructions for destroying penicillin6. Well, if that’s not bad enough, scientists from the N.Y.U. School of Medicine have found that some bacteria can use viruses to help them pass along the recipe for their favorite toxin7, results published in the journal Science.
Like humans, bacteria are also prone8 to infection by viruses. And most of these viruses—called bacteriophage, or phage for short—make their bacterial9 victims sick. Or even dead. But in the laboratory, the scientists discovered that Staphylococcus aureus, the bug3 that causes toxic10 shock syndrome11 among other things, can actually co-opt phage, using them to shuttle the gene4 for toxic-shock toxin to another bacteria, in this case Listeria. That’s doubly nasty, because Listeria on its own causes food poisoning, so if it added toxic shock to its repertoire12, well, that would be one seriously bad bug. Whether Staph aureus can pull off this stunt13 outside the lab’s not clear. But in this particular battle, ya gotta hope the viruses come out on top.
Thanks for the minute for Scientific American's 60-Second Science. I'm Karen Hopkin.
1 antibiotic | |
adj.抗菌的;n.抗生素 | |
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2 devious | |
adj.不坦率的,狡猾的;迂回的,曲折的 | |
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3 bug | |
n.虫子;故障;窃听器;vt.纠缠;装窃听器 | |
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4 gene | |
n.遗传因子,基因 | |
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5 genetic | |
adj.遗传的,遗传学的 | |
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6 penicillin | |
n.青霉素,盘尼西林 | |
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7 toxin | |
n.毒素,毒质 | |
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8 prone | |
adj.(to)易于…的,很可能…的;俯卧的 | |
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9 bacterial | |
a.细菌的 | |
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10 toxic | |
adj.有毒的,因中毒引起的 | |
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11 syndrome | |
n.综合病症;并存特性 | |
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12 repertoire | |
n.(准备好演出的)节目,保留剧目;(计算机的)指令表,指令系统, <美>(某个人的)全部技能;清单,指令表 | |
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13 stunt | |
n.惊人表演,绝技,特技;vt.阻碍...发育,妨碍...生长 | |
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