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2019年09月21日 13:19:04    日报  参与评论()人

福州那个医院治疗男性精子福州晋安区看不孕哪个医院最好三明市检查男科不孕不育价格 We have simulated human Mars exploration stations in the Canadian High Arctic and the American desert, where we can actually practice Mars missions and see what might work and what wont. The Mars Society has now run about 17 different crews between the Arctic and the desert stations.我们已经在加拿大北极高地和美州沙漠模拟建设了火星探测站,在这里我们可以真正地实践登陆火星的任务,看看什么可行什么不可行。目前有17名火星协会成员负责管理这两处探测站。Through NASAs educational activities, weve been working with the Mars Society to encourage this sort of astronaut training.通过美航天总局的教育活动,我们一直在与火星协会合作,鼓励培训合格的火星宇航员。These trips give its participants a taste of what awaits them on Mars.这些训练让参加者提前体会到在火星上等待他们的是什么。Im gonna be in this position here. Im gonna be the geologist. Ill be scouting for samples...我将会在这个位置。我将扮演地质学家的角色。还会勘测样本...One of the most important things we do here is our EVAs—our extravehicular activities. When we go for an EVA, we have to put our spacesuits, depressurize an airlock for one minute and then go out and conduct a EVA. Airlock is important because we need to depressurize down to the pressure of the Martian atmosphere, so when we open the hatch, it doesnt, its supposedly decompressed.其中我们在这里最重要的任务是舱外活动(EVAs)。当我们进行舱外活动时,我们需要穿戴太空,减压一个气闸一分钟,然后出去执行舱外活动。气闸很重要,因为我们需要降低气压,与火星环境的气压保持平衡,因此我们打开舱盖时,就不会解压。Well go 70 meters for a next location...距离下一个位置有70米...Roger that.收到。The job on Mars, the work that they are there to do is outside, and that work has be done in spacesuits.在火星上,他们的工作地点在舱外,必须穿着太空才能干活。But what will the Martian spacesuits of the future look like? At MIT they are reinventing the spacesuit from scratch.但是未来登录火星专用的太空会是什么样子呢?在麻省理工学院,他们重新革新了太空。The human mission tomorrow is really gonna push the limits of what we can do. We really want to think of a revolutionary design and technologies that could allow us to provide a new suit for Mars exploration.明日的人类计划将真正推动人类的极限。我们真的需要设想出一个创新的设计和工艺,让我们能够制作出新式的火星探险太空。Dava Newman is a professor at MIT, her specialty is human space flight.纽曼是麻省理工学院的教授,她的专长是人类太空飞行。One of the really important challenges is how do we keep a people alive. How do we keep astronauts alive. The current spacesuit is great, but it does have a few limitations, namely, its really heavy. The massive, the current system is about 140 kilos thats pushing 300 pounds. Its wonderful if you are weighed in this environment, but of course, we need a new system for Mars.其中最具挑战性的是如何维持生存。如何保持宇航员们在火星上生存。当前的太空很棒,但也存在一些局限性,也就是说它太重了。目前这个庞大的系统大约有140公斤重(将近300磅)。在这里的环境中140公斤不算什么,当然登录火星我们需要一套新的装备系统。原文译文属!201208/195154Its time for the couples to go their separate ways.这对情侣是时候分开了。She will give birth to his cubs alone in 9 months time.她将要用9个月的时间独自生下他的幼崽。And he may never see her again. He returns to the frozen ocean, no doubt releaved to resume his solid few ways.也许他再也见不到她了。他回到冰冻的海洋,毫无疑问继续自己的坚忍生活。And just in time. The ice beneath the feet will soon begone.而且就在这个时候,脚下的冰很快就会消失殆尽。Each spring, the Antarctic ocean undergoes an extraordinary transformation. An area of sea ice the size as Europe melts exposing the rich water beneath.每年春天,北冰洋都会经历一次非凡的转变。一个欧洲区域大小的海冰即将融化后,下面大量的海水会崭露头角。Short tail shear waters have traveled ten thousands miles from Australia to be here.短尾海鸥旅行千万里才从澳大利亚到这里来。Eighty millions visitors darken the sky, the largest gathering of seabirds on the planet. 八千万的旅行者们将天空变暗,最大的海鸟在这个星球上聚会。Hold by whales come all the way from the equator to feed the rich polar waters.鲸鱼专程为了这丰富的极地水域从赤道而来。Their giant tails are 5 meters across.它们巨大的尾巴有5米宽。Simply rising them above up in the surface give the whales enough downward momentum to reach the great swarm of krill and herring below.简简单单在海面上提高自己一点,就给了鲸鱼足够时间大口呼吸。The shear waters find the giant lead.海鸥发现这一庞然大物正处于领先。注:听力文本来源于普特201201/167499福州去哪间医院输卵管接通最好

福州省妇幼人工受孕价格宁德试管生儿子大约多少钱 Kids These Days!现在的孩子们!M: Kids these days! They have no respect; they dont know the value of dollar;they cant pay attention to anything for long.现在的小孩子们不懂得尊重(别人),不知道钱的价值,也不能把注意力长时间放在一件事上。F: Actually, that last one may be true. Well,the older generation always complains about kids. But researchers who study the effects of television actually have data to suggest that young people today dont pay attention in the way their parents do.事实上,最后一个或许是真的。上一代人老是抱怨孩子。但是研究电视(对人的)影响的研究人员真的有数据可以实现在的年轻人并不能像他们的父母一样集中注意力。M: Whats the connection to TV?跟电视有什么关系?F: Annie Lang and her colleagues at Indiana University have done a series of studies in which college-age people and middle-aged people were shown a string of t.v. and movie clips. In one trial, they showed images that changed at a fast rate—over eleven shots every thirty seconds. Other trials had images that changed at slower rates—five to six changes, or zero to three changes, every thirty seconds. People from all three groups were quizzed after watching the s to see how much they could remember.印第安纳大学的Annie Lang和他的同事们对做了一系列的研究。(研究人员给)大学年龄层的年轻人和中年人展示了一系列的电视节目和电影剪辑。他们一组用很每30秒超过11次的速度快速给他们展示了图像。另两组,他们又以更慢——每30秒5到6次或是0到3次的速度(展示)。看完录像后,三组人会被测试能记忆多少内容。M: The results?结果是?F: The results differed depending on a couple of factors, such as how arousing the images themselves were. But in general they found that young people have a much harder time than adults in paying attention to, and remembering, slower-moving material.结果受一些因素的影响而有所不同。比如说图像本身振奋人心的程度。但是总的来说,研究人员发现未成年人比成年人更难对慢速移动的东西集中注意力并且记忆住。M: I knew it, those lazy kids!我知道了,懒惰的孩子们!F: Its not quite laziness. They try, but slow material is hard for them. And adults fared worse at remembering fast-moving material.也不一定是懒惰。他们有尝试,但是(运动)慢的东西对他们来说很难(集中注意力并且记忆住)。而成年人在记忆快速移动的东西上更遭。 /201208/196135宁德去那间医院割包皮

晋安区孕前检查到哪里好A Smooth Wake平静的尾流Female: Donne and I are on a fantacy cruise. The sun has set and were standing on the rear deck. Look at the reflection of the moon.多恩和我正在进行着一场不可思议的巡游。太阳下山了,照耀在(船的)后舱。看,月亮的影子。Male: You might expect a ships wake to be more agitated than the surrounding water. Instead, its a smooth path through the waves that can extend for miles behind the ship. How come?你或许还期望(船的)尾流要比四周的水更汹涌吧?相反,它却是一条穿梭于海浪间的、可以在船尾延伸至几公里的平静轨迹。如何形成的呢?F: The wake starts out smooth because the passage of the ship destroys whatever wave patterns were there before the ship came through. The reason it stays smooth has to do with tiny organic molecules—such as decomposed plankton—on the surface of the water.尾流一开始就是平静的,因为在船经过之后,它的路径变改变了之前波浪的路径。尾流保持平静的原因还与水面上微小的有机分子有关,比如说已分解的浮游生物。There are always some organic molecules on the oceans surface, but as the ship pushes along, it plows these molecules to the sides. This leaves the wake something like a winter road that has just been snow-plowed, with piles of snow on both sides of the road.海面上总是会有一些有机分子。但是随着船只前行,它会把这写分子推到一两边。这就让尾流有点像在冬天里刚刚开通的雪路一样,路两旁是成堆的雪。The center of the wake is relatively free of organic molecules, but the two sides each have an accumulated pile-up. These stretch behind the ship on either side of the wake like ribbons.相对来说,尾流的中间就没有了有机分子,而两边就堆积了很多。在船后面,两边倒偶像这样延伸,就像两条带子一样。M: Well, thats interesting. But how does this keeps wake smooth?嗯,有意思!但是它是怎样保持水流平静的?F: It turns out that a thin ribbon of organic molecules on the surface of water is really good at suppressing small waves. These two ribbons, on either side of the wake, act like guardrails, preventing small waves from entering and crossing the wake.水面上薄薄的有机分子带真的很能“镇压”周围的小波浪。尾流两边的两条带状物就像护栏一样,阻止小波浪进入甚至横穿过尾流。M: So thats why the wake stay so smooth!这就是尾流如此平静的原因啊! /201209/198715 Weve allowed hands that are either as simple as a hook for doing heavy work or hands that actually have fingers like a human hand that could do complex dexterity functions.; 我们可把机器人的手做成简单的钩子,这同样能做重活,或者做成像人类一样长有五指的手来做复杂灵巧的工作。 At home, your Exoskeleton will help you with all sorts of manual labor. They will also let paralyzed and elderly people walk, even climb mountains. Eventually, this steel strong man may even go climbing by himself. 在家里,Exoskeleton能帮助你干任何体力劳动。它们也能帮助残疾人和老人行走,甚至能帮助他们爬山。最后,这种钢筋超人甚至可能会独自爬山。 ;It’s possible in the future that the Exoskeleton could not have the person in the cavities, but series of electronic systems and senor systems. So it actually becomes an autonomous robot.; “在未来,Exoskeleton很有可能不再依附于人类,而是有自己独立的电力、传感系统。那样它就能变成独立的机器人。” Just how autonomous will these super strong robots become? Could they conceivably organize themselves into an army and turn against us? They will be a formidable enemy. Friend or foe, the Exoskeleton embodies our hopes and fears about tomorrow’s robots. 这些拥有超能力的机器人到底会独立自主到什么程度?它们能自发地组织成一军队,向我们宣战吗?他们会成为令人畏惧的强敌。是敌是友,Exoskeleton体现了人类对未来机器人的希望和恐惧。 ;I think its a window on the future. And it’s a matter now of just finishing the project.; “我认为它就是未来的一扇窗。目前最重要的就是完成这项工程。” Owning a robot, especially a super-strong one is just one science fiction fantasy that may soon come true. What about having the power many of us have fantasized about-the power of X-ray vision. 拥有一个机器人,尤其是一个超能机器人,这在从前只是科幻小说里的幻想,但梦想可能很快变成现实。就拿我们曾经想拥有的X射线视觉来说吧。 ;X-ray vision obviously comes from superman. He just had the magic power to look right inside of anything, except for lead.; 很明显,X射线视觉来自于《超人》,他有看穿一切物质的魔力,铅除外。 George Stetton is the inventor of the sonic flashlight—a device that puts the power of X-ray vision in the palm of your hand. George Stetton是声控手电筒的发明者,这种装置将X射线视觉搬到人们巴掌大的手上。 ;You can look at your muscles, and tendons, and veins and your heart. It’s a very simple concept. It has an ultrasound probe and it has a little display, mounted on the ultrasound probe and a little mirror.; 你可以通过它观察你的肌肉,肌腱,还有静脉以及心脏。这个概念很简单。它带有超声波探测装置,在探测装置上面装有一个显示器和一面小镜子。 The flashlight works by superimposing the image captured by the ultrasound onto what you are seeing on the outside. The process is called augmented reality. It’s capable of showing features up to six inches beneath the skin. 这种手电筒通过超声波捕捉你所看到的外界事物,并将图像层层叠加。这个过程就叫做增强实境。它能显示皮肤下面6英寸的纹理特点。 原文译文属! 201207/191303福州二胎检查去那比较好宁德那里可以治疗早泄

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