先是文本加注释,官方20111027的音频。一周只更四天…… Robins Found Guilty in West Nile Virus Spread A study of the spread of West Nile virus across North America since its introduction in 1999 implicates robins as a key disease vector. Sophie Bushwick October 27, 2011 |1 West Nile virus first appeared in North America in 1999. And it quickly moved across the continent. Now a study has pinned the proliferation on a particular culprit: robins. The work is published in the journal Science. [A. Marm Kilpatrick, "Globalization, Land Use, and the Invasion of West Nile Virus"] A variety of animals can serve as hosts for West Nile, but the virus primarily spreads through a few species of mosquitoes that usually feed on birds, and those bird species, which become viral hosts. Robins may not be the most abundant of birds, but mosquitoes find their blood particularly tasty, frequently feeding on them and turning them into viral “super-spreaders.”
In fact, the virus may be why the once-growing robin population has leveled off. The mosquitoes and birds responsible for West Nile’s spread abound where people also live, raising the odds that a mosquito that picked up the virus feeding on a robin could transmit it to a person. Knowing that the spread of mosquito-borne disease depends on the insects’ feeding habits could help researchers predict and prevent the spread of new pathogens. As Dickenson said, hope is the thing with feathers.Even if it’s infected.名言! —Sophie Bushwick [The above text is a transcript of this podcast.]
West Nile Virus – 西尼罗河病毒,wiki 一下proliferation – a sudden increase culprit – the person who is guilty of a crime or doing something wrong mosquito-borne disease – 类airborne ,也就是蚊子传播的
2011-10-30 (27)今天这篇比较简单一点,1-4遍能听出个大概。查过生词后,5-6遍基本能听出框架。但是记笔记还是个老大难。7-8遍= =好吧,听起来觉得较简单了,这种语速跟读还是完全跟不上。This is Scientific American 60-Second Science. I am Sophie Bushwick. Got a minute?West Nile Virus first appeared in North America in 1999. And it quickly moved across the continent. Now a study has pin ned the proliferation on a particular culprit – robin s. The work is (was) published on the journal Science. A variety of animals can serve as the hosts for West Nile, but the virus primarily spreads through a few species of mosquito es that usually feed on birds, and those birdspecies, which become viral hosts. Robins may not be the most abundant of birds, but mosquitoes find their blood particularly tasty, frequently feed ing on them and turning them intoviral“super-spreaders .”In fact, the virus may be why the once-growing robin population (population of robins) hasleveled off. The mosquitoes and birds responsible for West Nile’s spread abound where people also live, raising the odds that a mosquito that picked up the virus feeding on a robin could transmit it to a person. Knowing that the spread of mosquito-borne disease depends on the insects’ feeding habits could help researchers predict and prevent the spread of new pathogens. As Dickenson said, hope is the thing with feathers, even if it is infected.Thanks for the minute, for Scientific American 60-Second Science. I am Sophie Bushwick.-- by 会员 铁板神猴 (2011/10/30 23:26:10)
我每次听写之前会听很多遍,走路神马的时候范听的,听出个大概,然后开始听写,听写完了基本就能跟读上了。 |