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SSS 2008-04-04

时间:2010-05-13 06:24来源:互联网 提供网友:0922013129   字体: [ ]
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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute.

Bacteria are amazingly adaptable1. They live in hot springs, in the dead sea and of course inside people where they can dish up some truly nasty diseases. Over the years many of these crafty2 critters have figured out how to dodge3 the antibiotics4 we use to kill them, usually by chewing the drugs up and spitting them out. Now researchers from Harvard Medical School have figured out that in the soil there are bacteria that are not only immune to our antibiotics, they eat antibiotics for breakfast. The discovery appears in the April 4 issue of Science. The scientists collected a diverse sample of soils, from cornfields, forests, swamps even the Boston public garden. From this dirt they isolated5 hundreds of different bacteria that could grow in a broth6 that contained nothing to eat except a great big helping7 of antibiotics. The fact that the ground is teeming8 with drug munching9 bugs10 might seem surprising but remember most of our antibiotics come from organisms that live in the dirt, like moulds and even other bacteria. With that kind of exposure some bugs are bound to figure out how to turn these potential toxins11 into a tasty snack. The danger for us is that they will share these recipes with their disease-causing pals12.

 

Thanks for the minute for Scientific American's 60-Second Science. I'm Karen Hopkin.
 


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1 adaptable vJDyI     
adj.能适应的,适应性强的,可改编的
参考例句:
  • He is an adaptable man and will soon learn the new work.他是个适应性很强的人,很快就将学会这种工作。
  • The soil is adaptable to the growth of peanuts.这土壤适宜于花生的生长。
2 crafty qzWxC     
adj.狡猾的,诡诈的
参考例句:
  • He admired the old man for his crafty plan.他敬佩老者的神机妙算。
  • He was an accomplished politician and a crafty autocrat.他是个有造诣的政治家,也是个狡黠的独裁者。
3 dodge q83yo     
v.闪开,躲开,避开;n.妙计,诡计
参考例句:
  • A dodge behind a tree kept her from being run over.她向树后一闪,才没被车从身上辗过。
  • The dodge was coopered by the police.诡计被警察粉碎了。
4 antibiotics LzgzQT     
n.(用作复数)抗生素;(用作单数)抗生物质的研究;抗生素,抗菌素( antibiotic的名词复数 )
参考例句:
  • 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。
5 isolated bqmzTd     
adj.与世隔绝的
参考例句:
  • His bad behaviour was just an isolated incident. 他的不良行为只是个别事件。
  • Patients with the disease should be isolated. 这种病的患者应予以隔离。
6 broth acsyx     
n.原(汁)汤(鱼汤、肉汤、菜汤等)
参考例句:
  • Every cook praises his own broth.厨子总是称赞自己做的汤。
  • Just a bit of a mouse's dropping will spoil a whole saucepan of broth.一粒老鼠屎败坏一锅汤。
7 helping 2rGzDc     
n.食物的一份&adj.帮助人的,辅助的
参考例句:
  • The poor children regularly pony up for a second helping of my hamburger. 那些可怜的孩子们总是要求我把我的汉堡包再给他们一份。
  • By doing this, they may at times be helping to restore competition. 这样一来, 他在某些时候,有助于竞争的加强。
8 teeming 855ef2b5bd20950d32245ec965891e4a     
adj.丰富的v.充满( teem的现在分词 );到处都是;(指水、雨等)暴降;倾注
参考例句:
  • The rain was teeming down. 大雨倾盆而下。
  • the teeming streets of the city 熙熙攘攘的城市街道
9 munching 3bbbb661207569e6c6cb6a1390d74d06     
v.用力咀嚼(某物),大嚼( munch的现在分词 )
参考例句:
  • He was munching an apple. 他在津津有味地嚼着苹果。 来自《简明英汉词典》
  • Munching the apple as he was, he had an eye for all her movements. 他虽然啃着苹果,但却很留神地监视着她的每一个动作。 来自辞典例句
10 bugs e3255bae220613022d67e26d2e4fa689     
adj.疯狂的,发疯的n.窃听器( bug的名词复数 );病菌;虫子;[计算机](制作软件程序所产生的意料不到的)错误
参考例句:
  • 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》
11 toxins 18c3f40d432ba8dc33bad8fb82873ea8     
n.毒素( toxin的名词复数 )
参考例句:
  • The seas have been used as a receptacle for a range of industrial toxins. 海洋成了各种有毒工业废料的大容器。
  • Most toxins are naturally excreted from the body. 大部分毒素被自然排出体外。 来自《简明英汉词典》
12 pals 51a8824fc053bfaf8746439dc2b2d6d0     
n.朋友( pal的名词复数 );老兄;小子;(对男子的不友好的称呼)家伙
参考例句:
  • We've been pals for years. 我们是多年的哥们儿了。
  • CD 8 positive cells remarkably increased in PALS and RP(P CD8+细胞在再生脾PALS和RP内均明显增加(P 来自互联网
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