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泉州第二人民医院客服咨询最新典范泉州妇科病在线

2019年07月23日 09:34:30
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栏目介绍:搞笑英语轻松学通过不同的搞笑生活片段来学习日常口语,领域涉及生活的各个方面,让我们既可以学习到地道的口语,还能够爆笑一番。快来看看吧。 Article/201508/391656泉州治疗急性子宫内膜炎多少钱When I was in my 20s,我二十多岁时I did some of the basic mathematics of black holes,对黑洞进行过一些基础演算but few people shared my fascination.但少有人与我志同道合These days, they are a popular subject.现今,黑洞成为流行的课题Physicists all over the world are studying black hole behavior.全世界的物理学家都在研究黑洞行为We now know that black holes现在我们知道黑洞are not only fascinating in their own right,不仅因它们自身的特点受到欢迎but that they play a还因为它们在星系形成过程中fundamental role in the formation of galaxies.起到至关重要的作用They also give us a glimpse of how the universe may end.同时让我们得以一窥宇宙可能的灭亡方式A black hole forms when a large star,当一颗比太阳大20倍的大恒星one say, 20 times the mass of our sun, comes to the end of its life.走向生命尽头时,黑洞就产生了Such a star looks nothing like our sun这样的恒星与太阳完全不同 because it#39;s become unstable,因为开始灭亡时convulsing violently as its death throws begin.它变得不稳定并剧烈震动Finally it runs out of fuel and begins to shrink,最终,它燃料耗尽,开始收缩getting denser and denser, hotter and hotter.密度越来越大,温度越来越高But with a star this massive,但对于如此巨大的恒星there is no force in the universe宇宙中没有任何力量capable of stopping the collapse.能够阻止恒星崩塌The core is so heavy that it just keeps on falling in on itself.内核太过沉重以至于不断坍缩Gravity is running wild.万有引力如脱缰之马In just 15 seconds or so,仅仅十五秒钟左右the unstoppable force crushes the star from这股无坚不摧的力量将此恒星直径millions of miles in diameter to as little as 12 miles in diameter.从数百万英里压至十二英里All the mass that was in the star is still there,恒星的质量没有发生改变but its own weight keeps但它自身的重量forcing it down smaller and smaller still.一直在迫使它变得越来越小The temperature of the core sores to 100 billion degrees.内核温度飙升至一千亿摄氏度The outer layers are blasted away in a massive supernova.恒星外层在剧烈的超新星爆炸中解体But deep in the center, the core falls down但在恒星中心深处,内核逐渐陷入what we call a gravitational well.所谓的重力势阱It crushes itself into a single point.它坍缩成一个点A black hole is born.黑洞便诞生了Nothing nearby can escape its pull,附近的一切都无法逃脱它的引力 not even light.甚至光也难以幸免It#39;s hard to imagine just how dense a black hole can be.黑洞的密度大到人类难以想象But I#39;ll try to put it into perspective using something familiar.但我要借用大家熟悉的事物进行深入剖析The Earth.地球 Article/201509/398703泉州医院体检Methane is a greenhouse gas that#39;s 23 times stronger than carbon dioxide,甲烷是一种温室气体,强于二氧化碳23倍so we#39;re very interested in understanding所以我们对于了解有多少how much methane is coming out of these lakes.到底有多少甲烷从这些湖里生成There#39;s one sure way to check这有一种确切的方法去测量just how much methane is in these bubbles,这些气泡里有多少甲烷because it#39;s highly flammable.因为甲烷高度易燃Wow! My God!Whoo!哇!我的上帝!喔哦!I can#39;t believe it#39;s a fire coming out of ice.我难以相信这些火是从冰中来Alarmingly, these bubbles can be found all over the place警告,这些气泡满地都是which means there must be enormous amounts of methane trapped here.这意味这里有大量甲烷被截留着-You y? -Yeah.-你准备好了么?-耶-That#39;s nice, isn#39;t it? -This place is just full of these.-很漂亮,对吧?-这地方都是这些东西Fire coming out of ice火从冰中来is one of the most bizarre things I#39;ve ever seen,这是我见到最奇异的事情之一but it has very serious implications.但是这意味着很严重的问题 Article/201510/401625泉州流产费用多少钱

泉州做无痛人流大约多少钱泉州新阳光妇科医院好吗The family at the time consisted of 30 members那时这个家庭有三十名成员 and 15 of the members had inherited其中十五人由祖母a speech and language disorder from the grandmother.遗传了说话与语言障碍The first genetic study第一次遗传分析was able to locate the general area of the abnormality.确定了这一异常的大概区域It was on Chromosome 7在七号染色体上and all the affected family members had it.所有受影响的家族成员都有这个异常Reflecting its obvious importance in their ability to talk,显然它对于人类语言能力很重要the research team called it Speech 1.研究小组称其为;说话一号;Speech 1 was located on chromosome number 7;说话一号;位于七号染色体but where exactly on chromosome number 7但具体在七号染色体的哪个部位呢and which particular gene was it,到底是哪个基因呢was something that would have required several more years这就需要更多年的调查研究of investigations until the actual gene was detected.才能找出真正的基因所在Then, out of the blue, a totally unconnected child让人惊讶的是 一个拥有同样语言缺陷with the same type of speech defect was brought in to see them.却完全无关的孩子来到了他们面前And when you think that in this big wide world,当你想到 在这个大千世界the same kind of problem presents itself in the same country同样的问题出现在了同一个国家in the same location but to the same person!同一个地区的不同人身上 Article/201412/350838如果一部音乐电视作品不是用来表达导演想传递的一个概念而是纯粹诠释音乐本身,会如何演绎呢?身为设计师的Jakob Trollback和我们一起来分享他的创作。 Article/201411/341627泉州哪家医院能够做子宫肌瘤微创吗The ship would have to be big to carry a huge amount of fuel,这艘飞船必须能够装载足够的燃料enough to accelerate it to nearly the speed of light.以供其接近光速行驶Getting to just beneath the cosmic speed limit要使飞船无限接近宇宙极速would require six whole years at full power.需要全功率加速运行长达六年Four4Three3Two2One1The initial acceleration would be gentle由于飞船庞大而笨重because the ship would be so big and heavy.起始加速度会很慢But gradually it would pick up speed and但会逐渐加速soon would be covering massive distances.很快就能航行很远的距离In just one week, it would have reached the outer planets,只需一周,就能到达带外行星gas giants like Neptune.如海王星一样的气体巨行星After two years, it would reach half light两年后,它将加速到光速的一半speed and be far outside our solar system.并早已航行到太阳系外很远的地方Two years later,再过两年 it would be traveling at 90% of the speed of速度将会增加到光速的90%light speed and passing our closet star system, Alpha Centauri.并掠过离我们最近的半人马座阿尔法星系Around 30 trillion miles away from the earth,在远离地球30万亿英里之外4 years since launch,自发射起4年后the ship begins to travel in time.飞船开始了时间旅行For every hour of time on the ship, two hours pass on earth,飞船上一小时,相当于地球上两小时a similar situation to the spaceship和环绕特大质量黑洞飞行的that orbited the massive black hole.宇宙飞船是同样道理But there#39;s more to come.但好戏还在后头 Article/201508/390535泉州人流技术哪家好

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