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VOA慢速英语:研究_你的气味可能吸引蚊子

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中英对照 听力原文

A new study finds that some people attract mosquitoes much more than others, and it probably involves the way they smell.

一项新的研究发现,有些人比其他人更容易吸引蚊子,这可能与他们的气味有关。

The researchers found that people who attract mosquitoes the most produce a lot of certain chemicals on their skin. These chemicals are connected to the scent that attracts the mosquitoes.

研究人员发现,最容易吸引蚊子的人,会在皮肤上产生大量特定的化学物质。这些化学物质与吸引蚊子的气味有关。

Leslie Vosshall is one of the authors of the study and a neurobiologist at Rockefeller University in New York. She said, "If you have high levels of this stuff on your skin, you're going to be the one at the picnic getting all the bites."

莱斯利·沃沙尔(Leslie Vosshall)是这项研究的作者之一,也是纽约洛克菲勒大学的神经生物学家。她说:“如果你的皮肤上有大量的这种物质,你就会成为野餐时被咬的那个人。”

For many years, there have been a lot of ideas about who is likely to get bitten more. But those ideas have not been supported by strong evidence, Vosshall said.

多年来,关于谁更容易被咬,人们有很多想法。但沃沙尔说,这些想法并没有强有力的证据支持。

For the study, researchers designed an experiment to have people's scents compete against each other.

在这项研究中,研究人员设计了一个实验,让人们的气味相互竞争。

They asked 64 volunteers to wear stockings around their forearms to absorb, or take in, the scent from their skin. The stockings were put in separate traps at the end of a long tube. Then, dozens of mosquitoes were released.

他们要求64名志愿者在前臂套上长筒袜,以更好的吸收皮肤上的气味。然后把长筒袜放在长管末端的不同陷阱中。之后,释放几十只蚊子。

The mosquitoes came to some traps much more than others. The scientists did the experiment several times, always changing which stockings were competing against each other. At the end, they discovered a huge difference between stockings. The most attractive stocking was around 100 times more attractive to the mosquitoes than the last-place finisher.

有些陷阱的蚊子要比其他陷阱多得多。经过数次实验,科学家发现有些袜子尤其招蚊子。最招蚊子的袜子对蚊子的吸引力,是最后一名的100倍左右。

The experiment used a kind of mosquito that spreads diseases like yellow fever, Zika and dengue. Vosshall said she would expect similar results from other kinds of mosquitoes. But additional research needs to be done to know for sure.

该实验使用了一种传播黄热病、寨卡病毒和登革热等疾病的蚊子。沃沙尔说,她预计其他种类的蚊子也会有类似的结果。但是还需要做更多的研究来确定。

By testing the same people for over a year, the study showed that these big differences remain, said Matt DeGennaro, a neurogeneticist at Florida International University. He was not involved in the research.

佛罗里达国际大学的神经遗传学家马特·德根纳罗说,通过对同一批人进行一年多的测试,研究表明这些巨大的差异仍然存在。他没有参与这项研究。

"Mosquito magnets seem to remain mosquito magnets," DeGennaro said.

根纳罗说:“吸蚊者似乎还是吸蚊者。”

The researchers found a common factor: Mosquito magnets had high levels of certain acids on their skin. People produce them in different amounts, Vosshall said. The healthy bacteria that live on the skin eat up these acids and produce part of the way our skin smells, she said.

研究人员发现了一个共同的因素:吸蚊者皮肤上的某些酸含量很高。沃沙尔说,每个人产生这种酸的数量不同。她说,生活在皮肤上的健康细菌会吃掉这些酸,并产生我们皮肤的部分气味。

The research could help find new ways to repel mosquitoes, said Jeff Riffell, a neurobiologist at the University of Washington who was not involved with the study. There may be ways to affect the skin bacteria and change the smell that attracts mosquitoes, he said.

华盛顿大学(University of Washington)的神经生物学家杰夫·里费尔(Jeff Riffell)说,这项研究可能有助于找到驱蚊的新方法。他没有参与这项研究。他说,可能有办法影响皮肤细菌,改变吸引蚊子的气味。

However, he said that would be hard to do. Researchers also did the experiment with mosquitoes whose genes were changed to damage their sense of smell. But they still flew to the same mosquito magnets.

然而,他说这很难做到。研究人员还对蚊子进行了实验,改变这些蚊子的基因,损害它们的嗅觉后,它们仍然飞向了同样的蚊子聚集地。

Vosshall said mosquitoes have ways to find us even if we change some conditions. "They have many backup plans to be able to find us and bite us," she said.

沃沙尔说,即使我们改变了一些条件,蚊子还是有办法找到我们。“它们有很多备用计划,可以准确的找到我们,咬上我们。”她说。

I'm Andrew Smith.

安德鲁·史密斯报道。

A new study finds that some people attract mosquitoes much more than others, and it probably involves the way they smell.

The researchers found that people who attract mosquitoes the most produce a lot of certain chemicals on their skin. These chemicals are connected to the scent that attracts the mosquitoes.

Leslie Vosshall is one of the authors of the study and a neurobiologist at Rockefeller University in New York. She said, "If you have high levels of this stuff on your skin, you're going to be the one at the picnic getting all the bites."

For many years, there have been a lot of ideas about who is likely to get bitten more. But those ideas have not been supported by strong evidence, Vosshall said.

For the study, researchers designed an experiment to have people's scents compete against each other.

They asked 64 volunteers to wear stockings around their forearms to absorb, or take in, the scent from their skin. The stockings were put in separate traps at the end of a long tube. Then, dozens of mosquitoes were released.

The mosquitoes came to some traps much more than others. The scientists did the experiment several times, always changing which stockings were competing against each other. At the end, they discovered a huge difference between stockings. The most attractive stocking was around 100 times more attractive to the mosquitoes than the last-place finisher.

The experiment used a kind of mosquito that spreads diseases like yellow fever, Zika and dengue. Vosshall said she would expect similar results from other kinds of mosquitoes. But additional research needs to be done to know for sure.

By testing the same people for over a year, the study showed that these big differences remain, said Matt DeGennaro, a neurogeneticist at Florida International University. He was not involved in the research.

"Mosquito magnets seem to remain mosquito magnets," DeGennaro said.

The researchers found a common factor: Mosquito magnets had high levels of certain acids on their skin. People produce them in different amounts, Vosshall said. The healthy bacteria that live on the skin eat up these acids and produce part of the way our skin smells, she said.

The research could help find new ways to repel mosquitoes, said Jeff Riffell, a neurobiologist at the University of Washington who was not involved with the study. There may be ways to affect the skin bacteria and change the smell that attracts mosquitoes, he said.

However, he said that would be hard to do. Researchers also did the experiment with mosquitoes whose genes were changed to damage their sense of smell. But they still flew to the same mosquito magnets.

Vosshall said mosquitoes have ways to find us even if we change some conditions. "They have many backup plans to be able to find us and bite us," she said.

I'm Andrew Smith.

_____________________________________________________________________

Words in This Story

attract -v. to bring attention to something or make something come towards another thing

scent -n. an odor or smell

picnic -n. a meal eaten outdoors, often in a park or other natural setting

stockings -n. tight-fitting covering for legs, feet, or arms, usually made of nylon

dozen -n. a group of twelve items

factor -n. a thing or element that has an effect on a situation or event

repel -v. to force or move away something coming towards an object

backup -n. alternatives, other options


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