SSS 2009-03-19
时间：2019-01-08 作者：英语课 分类：Scientific American(三)月
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute.
Imagine antibiotics 2 that would never lose their punch. New research focuses on drugs that bacteria simply can’t resist. Most antibiotics work by killing 3 pathogens. The problem is, it’s hard to kill every single microbe. The rare ones that survive reproduce, often creating a population that’s antibiotic 1 resistant 4.
But what if you could make a drug that renders bugs 5 harmless, without actually killing them? In that scenario 6, bacteria might not evolve resistance. And that’s what researchers showed in the March 9th issue of Nature Chemical Biology.
The key is communication. In well-trained armies, commanders bark orders, and soldiers signal each other to coordinate 7 their positions. The same is true for a lot of infectious bacteria, which hold off mounting a full assault—complete with toxins—until there are enough of them around.
The scientists designed three different compounds that jammed cell-to-cell signaling in bacteria that cause food poisoning and cholera 8. And they found that the bugs remained sensitive to drugs, even after 26 generations. They still need to confirm that the bugs that are silenced are in fact less deadly. If so, the new antibiotics would leave bacteria alive, but they’d basically be POWs. With no way to escape.
Thanks for the minute for Scientific American's 60-Second Science. I'm Karen Hopkin.
- The doctor said that I should take some antibiotic.医生说我应该服些用抗生素。
- Antibiotic can be used against infection.抗菌素可以用来防止感染。
- the discovery of antibiotics in the 20th century 20世纪抗生素的发现
- The doctor gave me a prescription for antibiotics. 医生给我开了抗生素。
- Investors are set to make a killing from the sell-off.投资者准备清仓以便大赚一笔。
- Last week my brother made a killing on Wall Street.上个周我兄弟在华尔街赚了一大笔。
- Many pests are resistant to the insecticide.许多害虫对这种杀虫剂有抵抗力。
- They imposed their government by force on the resistant population.他们以武力把自己的统治强加在持反抗态度的人民头上。
- All programs have bugs and need endless refinement. 所有的程序都有漏洞，都需要不断改进。 来自《简明英汉词典》
- The sacks of rice were swarming with bugs. 一袋袋的米里长满了虫子。 来自《简明英汉词典》
- But the birth scenario is not completely accurate.然而分娩脚本并非完全准确的。
- This is a totally different scenario.这是完全不同的剧本。
- You must coordinate what you said with what you did.你必须使你的言行一致。
- Maybe we can coordinate the relation of them.或许我们可以调和他们之间的关系。