SSS 2008-07-07
时间：2019-01-08 作者：英语课 分类：Scientific American(七)月
This is Scientific American's 60-Second Science, I am Karen Hopkin. This'll just take a minute.
You’ve probably heard of the whole six degrees of separation thing. It predicts that, on average, you’re no more than six links away from any other person on the planet. Like your roommate runs into a woman whose brother is a writer for Desperate Housewives. Which means you’re only six invites away from having lunch with Marcia Cross’s nannies. The concept stems from the fact that people have social networks, and those networks tend to intersect. But the importance of this “small world” phenomenon extends beyond whose email address you have on your Blackberry. Now scientists think they can take advantage of these networks to design more efficient vaccination 1 programs. According to an international team of physicists 2, the most effective way to protect a population from disease is to immunize people who have the largest networks. If you can keep the most highly connected people from infecting their friends, neighbors, co-workers, you can halt an epidemic 3. And you may only have to vaccinate 4 half the number of people you would normally. The findings will appear in an upcoming issue of Physical Review Letters. The biggest problem with such a program, people are bound to feel left out when they’re told that they don’t need a shot.
Thanks for the minute for Scientific American's 60-Second Science, I'm Karen Hopkin.
- Vaccination is a preventive against smallpox.种痘是预防天花的方法。
- Doctors suggest getting a tetanus vaccination every ten years.医生建议每十年注射一次破伤风疫苗。
- For many particle physicists, however, it was a year of frustration. 对于许多粒子物理学家来说，这是受挫折的一年。 来自英汉非文学 - 科技
- Physicists seek rules or patterns to provide a framework. 物理学家寻求用法则或图式来构成一个框架。
- That kind of epidemic disease has long been stamped out.那种传染病早已绝迹。
- The authorities tried to localise the epidemic.当局试图把流行病限制在局部范围。