VOA慢速英语(翻译+字幕+讲解):科学家揭开蚊子飞行之谜
日期:2017-06-14 13:27

(单词翻译:单击)

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听力文本

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Scientists Uncover Mystery of Mosquito Flight
The mosquito is a troublesome and sometimes dangerous insect. Their bites itch and can carry dangerous diseases, like malaria, Zika virus and yellow fever.
Recently, researchers from Britain and Japan discovered how mosquitoes fly. This knowledge, they say, help find ways to stop mosquitoes from spreading diseases in the future.
Mosquito wings are small and have an uncommon shape. Because of this, it is hard to believe that they are able to fly. So, how is their flight possible?
The team of scientists from Britain and Japan solved the mystery. They used high-speed cameras and computer images to understand the mechanics of how the insect moves its wings to stay in the air.
Researchers at the University of Oxford took images of mosquito wing movements. They set up eight super-high speed cameras that take 10,000 images each second.
Simon Walker is a researcher at the University of Oxford.
"So normally to record an insect you need at least two cameras, ideally more, so you've got enough views of an insect because with two camera views you can then take any point on an insect and calculate its 3-D coordinates."
The insect has two antennae, or tall, thin organs on its head that it uses to feel things. But its antennae and six legs make it difficult to take clear images of the wing movements. So, the team needed to use eight cameras to view the wings from many directions.
The extra cameras let the researchers see that the mosquito's wings move eight hundred times each second. That is four times faster than many insects of a similar size.
Mosquitoes fly by moving their wings in several different directions.
The thin top edges of their wings move forward first and then they reverse direction and move down. The movement looks almost as if the wings are drawing the number eight.
The research team believes the mosquitoes' wing movements could help inventors design new flying devices.
Walker says that existing unmanned flying devices – or drones – do not work very well outside because wind can affect their flight.
"Insects, on the other hand, deal really, really well with even quite windy conditions. So understanding how they can do this is going to be advantageous to us in the future."
These researchers say that, more importantly, understanding how mosquitoes fly might help find ways to stop them from spreading diseases.
I'm Alice Bryant.

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词汇解析

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1.flying devices 飞行设备

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More bug-like flying devices are being developed in other research laboratories around the world.
世界上其他的实验室正在发展更多的像小虫一样的飞行装置abqjb@qniZa^Wp

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2.move forward 向前移动

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The only way we can move forward is to have an open and honest dialogue about race and discrimination.
我们前进唯一的办法就是对于种族和歧视进行开放、诚实的对话sg)4Xri[3E6]6ip

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3.yellow fever 黄热病

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He explained the yellow fever epidemic as a providential act to discourage urban growth.
他解释说黄热病的流行恰好减缓了城市的扩张g_&oJv5+_h

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4.move down 下移;后退

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When you drop from a standing position into a squat, your hips move down while your knees move sideways.
当你从站立姿势下蹲时,你的臀部向下移动,而你的膝盖向一侧运动SRh|0_%Apqhd%RGgPw=1

内容解析

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1.So understanding how they can do this is going to be advantageous to us in the future."

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be advantageous to 有利于

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This will be advantageous to our task of building a powerful socialist country.
这对我们建设强大的社会主义国家比较有利3EbwN_=wTraodW
They may believe that a response from us in one fashion or another would be advantageous to them.
他们可能认为,不论我们做出什么反应,都对他们有利B+dyC5qBIp4~e

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2."Insects, on the other hand, deal really, really well with even quite windy conditions.

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on the other hand 另一方面

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On the other hand, the idea appealed to him
从另一方面来说,这个想法又使他很感兴趣v)c)n9VDZH!&8-n*5at
On the one hand, they wanted very much to visit their squad leader in hospital; on the other hand, they didn't want to disturb his rest.
他们一方面很想去医院看望班长,一方面又怕影响他休息fpg6E[|OOw+

参考译文

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科学家揭开蚊子飞行之谜
蚊子是一种令人苦恼的、甚至具有危险性的昆虫Q+HrVVIwFn&m6|dr。它们的叮咬会使人觉得瘙痒而且蚊子可能携带危险疾病,如疟疾、寨卡病毒和黄热病Tw9%HER5QX~^NK~q
近日,英国和日本的研究人员揭开了蚊子的飞行之谜HTg%JXoaaI&RZyaK。他们说,这些知识将来或有助于发现阻止蚊子传播疾病的方法@1yPn+rqRk^5VJP+&nhQ
蚊子翅膀短小,形状不一~t2(2yb4c%m.!gbKD|;%。鉴于此,人们很难相信蚊子能够飞行wQ,3smuBN;_9SO8n。那么,他们是如何飞行的呢?
英国和日本的科学家小组揭开了这一谜团XqK*h0e3(lV+Vyv。他们利用高速摄影机和电脑图像观察昆虫如何扇动翅膀保持空中停留的力学原理&l=t-HmK3o1e*Zph

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科学家揭蚊子飞行之谜.jpeg
牛津大学的研究人员拍下了蚊子翅膀扇动的图像E*HHhk-[o44。他们设置了8架超高速相机,这些相机每秒可拍摄10000帧图像tCBAv4V.frMKf
西蒙·沃克(Simon Walker)是牛津大学的研究员xx2%Ix118Z10[OZHIs
“通常情况下,记录一只蚊子需要至少两架相机,当然越多越好,这样你才能全面地观察昆虫,如果有两架相机的图像,你可以截取昆虫身上的任意一点并计算其三维坐标FcJsL&u]i0N
蚊子头上的两个高而薄的触须就是用来感知事物的器官4nYYHHTxJec(]XX(U。不过蚊子的触须和六条腿会妨碍拍摄翅膀扇动图像的清晰度i*nNHosMZ*。因此,研究团队需要8架摄像机进行多方位观察yBglbavl9CzL)^^Z
多余的相机能够让研究人员看到蚊子翅膀每秒扇动800次的影像d3NP6vNT3JVl。这比同等身形昆虫的速度快4倍+eYX0hVM0@6M|RON
蚊子从几个不同的方向移动翅膀飞行)8d@)T@glc;KCEdN
蚊子翅膀顶部的薄边缘先向前移动,然后反方向并向下移动gm7mb=Y,c84+oazE。翅膀扇动的幅度像是在画数字8j(P69yaVK|7uB8R^l]r
研究人员认为,蚊子扇动翅膀的原理能够帮助人类发明新的飞行装置@VU.r[2e^y(2f8I5F*8_
沃克表示,受风向因素影响,现有的无人驾驶飞行设备或无人驾驶飞机在户外作业时不甚理想Fyunf8JaE^gE0
“再者,即使在风力强劲的情况下,昆虫也能平稳地飞行a|%c|[fk;8F#nl]7m;c。因此,了解它们的飞行原理对未来的研发十分有利wlwXkM|Wcj!r1(t4Wo51。”
研究人员还指出,更重要的是:了解蚊子飞行原理或有助于找到阻止其传播疾病的方法nma^xU3fN|
爱丽丝·布莱恩特为您播报WY&uPQJEN=7d,kf-|

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译文为可可英语翻译,未经授权请勿转载!

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重点单词
  • antennaen. 天线(等于aerial);[动]触须;[植]蕊喙;
  • advantageousadj. 有利的,有助的,有益的
  • mechanicsn. 力学,机械学,(技术的,操作的)过程,手法
  • fevern. 发烧,发热,狂热 v. (使)发烧,(使)狂热
  • discouragevt. 使气馁,阻碍
  • disturbv. 扰乱,妨碍,使 ... 不安
  • responsen. 回答,响应,反应,答复 n. [宗]答复语,
  • uncovervt. 揭开,揭露
  • affectvt. 影响,作用,感动
  • understandvt. 理解,懂,听说,获悉,将 ... 理解为,认为