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2019年02月19日 00:06:01    日报  参与评论()人

上海治疗痘痘要的价格闵行区中医医院激光祛痣价格费用上海丰唇 And we again, we were captivated. How could anybody do this? 我们很好奇,怎么可能做到呢?And we thought it must be a hoax. 多半是吹牛And we started looking through libraries, looking for the secret tones that would allow you to do this. 我们开始泡图书馆,寻找打免费电话的秘密And it turned out that we were at Stanford Linear Accelerate Center one night, 一天晚上我们去了斯坦福线性加速中心and way in vaults of their technical library, way down at the last bookshelf in the corner bottom rack.We found an ATamp;T Technical Journal that laid out the whole thing.在科技图书馆角落的最后一排书架上,我们找到一份ATamp;T技术手册,揭开了所有的秘密And that#39;s another moment I#39;ll never forget. 我永远忘不了那一刻We saw this journal and we thought ;My God! It#39;s all real.; 我们看着这份手册,心想老天这一切都是真的And so we set out to build a device to make these tones. 于是我们着手制作能够发出这种音频的装置And the way it work was, you know when you make long distance call you used to hear ;dududududu; right in the background. 它的原理是这样的,我们打长途电话时会听到嘟嘟的声音They were tones that sound like the touch tone you make on your phone, but with different frequencies so you can make them.听起来像拨电话的按键音,频率不同,但可以模拟It turned out that was the signal from one telephone computer to another, 实际上那是从一台计算机传到另一台计算机的信号controlling the computers in the network. 它可以控制交换机的工作And ATamp;T made a fatal flaw when they designed an original telephone network, digital telephone network, was they put the signal in from computer to computer in the same band as your voice, ATamp;T公司设计的数字电话网络有严重漏洞,他们使用与声音相同的频段来发送控制信号which meant if you could make those same signals, you could put it right into the handset. 也就是说只要你模拟出相同的音频信号,通过听筒发送出去And literally, the entire ATamp;T international phone network would think that you were an ATamp;T computer. 整个ATamp;T的国际电话网就会把你当成一台ATamp;T计算机So after three weeks we finally built a box like this, it worked.三周后我们做出了这样的一个装置,真的管用 /201306/243355Joseph Kim 以美国难民的身份,诉说在朝鲜的饥荒年月。他在美国开始了新生 - 但仍怀抱着寻回家人的希望。 Article/201402/275611徐汇区妇幼保健医院隆胸多少钱

上海市第一人民医院宝山分院割双眼皮手术价格It#39;s time for the female to lay her eggs.母乌贼准备产卵Using the sperm from both males,它用两只公乌贼的精子she fertilises her eggs one by one逐一让产下的卵受精and glues them to a rock in a hidden crevice.然后把受精卵薪在一个 隐密缝隙处的岩石上With luck, she will now have a mix of offspring.如果幸运 它将拥有两个父亲的孩子Some may become masterful males,有些可能成为强壮公乌贼and others, little sneaks.有些则是个性奸诈She#39;ll have all the bases covered.它可以说是毫无疏漏The coastal waters of British Columbia.这是卑诗省沿岸Home to this four-metre-long Pacific Giant Octopus.这只四公尺长的 北太平洋巨型章鱼住在这里She is a formidable predator,它是可怕的掠食动物but at the moment hunting isn#39;t on her mind.但现在它不打算猎食She has just mated for the first time.这只母章鱼刚完成第一次交配And now she#39;s searching for a safe refuge.现在要寻找安全庇护所 Article/201310/260306上海纹眉多少钱 By around 12,000 years ago, the Clovis people and their descendants had not only sp across North America, but had also reached the southernmost tip of South America. Not long after this, warming climate and melting ice raised sea levels sharply so that the land-bridge to Asia flooded once again. There was no way back.大约在一万两千年前,克洛维斯人与他们的后裔,不仅仅已经遍布北美,同时到达了南美洲的最南端。没过多久,全球气候变暖,冰川融化,海平面大幅度回升,再次淹没了通往亚洲的大陆架。没有退路了。For the next nine thousand years, in fact until European contact in the sixteenth century AD, the civilisations of the Americas would develop on their own. So, 12,000 years ago, we had reached a key moment in human history. With the exception of the islands of the Pacific, human beings had settled the whole habitable world.于是在接下来的九千多年,直到公元十六世纪左右欧洲探险者重新发现了美洲,在此之间的悠悠岁月里,美洲文明将独立发展,自成一体。因此,一万两千年前,我们到达了人类历史上的关键时刻。随了太平洋岛屿以后,人类差不多生息繁衍在了世界任何可居住的角落。We seem to be hard-wired to keep moving, to want more, to find out what#39;s beyond the next hill. Broadcaster and traveller Michael Palin has covered a good deal of the globe - what does he think drives us on?我们似乎与生俱来有一种永远向前的天性,想要得到更多,发现更多,去跨越下一座山峰。广播员与旅行家迈克尔·佩林差不多走遍全世界了,那他又是什么力量驱动这种人性执着呢?#39;In myself I#39;ve always been very restless and, from when I was very small, interested in where I wasn#39;t, [in] what was over the horizon, [in] what was round the next corner. And the more you look at the history of #39;homo sapiens#39;, it#39;s all about movement, right from the very first time they decided to leave Africa.“对于我自己而言,我一向就很不安分了,就是呆不住。很小很小的时期,我对所有我没去过的地方都感兴趣,想去看看地平线之外有什么,下个转弯处之后又有什么。而且当你看了越多的“智人”历史,你就越感觉从他们决定离开非洲的那一刻起,那便是一部旅行探索的历史。It is this restlessness which seems a very significant factor in the way the planet was settled by humans. It does seem that we are not settled, we think we are, but we are still looking for somewhere else where something is better - where it#39;s warmer, it#39;s more pleasant.现在看来似乎这种躁动不安的天性恰恰是一种非常重要的因素,决定了人类在这地球上的定居方式。其实并不是说我们没能安居下来,我们觉得我们安顿好了,然而我们还是自然而然地想往别外寻找更好的地方,更温暖,更恰人的地方。可能这是一种元素,精神元素。Maybe there is an element, a spiritual element, of hope in this whole thing. You know, that you are going to find somewhere that is going to be wonderful. It#39;s the search for paradise, the search for the perfect land - maybe that#39;s at the bottom of it all, all the time.#39;你知道你就是得去寻找这片乐土。这是在寻找天堂,在寻找极乐世界。也许这追求在是整个人类历史上很本质的,一直就是。Hope, as the defining human quality - wouldn#39;t that be an encouraging note in which to end this first week of our history of the world?希望是一种定义人性的要素,拿它来结束我们《百件物品中的世界历史》这系列第一周五集节目岂不鼓舞人心?What#39;s stood out for me in this week#39;s long journey of nearly two million years, is the constant human striving to do things better; to make tools that are not only more efficient but also more beautiful, to explore not just environments but ideas, to struggle towards something not yet experienced. The objects I#39;ve looked at this week have tracked that move - from tools for survival not so different from what other animals might use, to a great work of art and the beginnings of religion.本周我们经历了将近两百万年的漫长旅程,感受最深的一点是人类总是不断努力着把事情做得更好,把工具制造得不仅仅更高效,而且更漂亮;探索的不仅仅是周围的环境,而且是思想;向未知事物奋斗着。本周我介绍的各件物品,从一件可能动物也能使用、效用不高的生存工具开始,以一件意味着宗教起点的伟大艺术作品结尾。Next week, I#39;m going to be looking at how, about ten thousand years ago, we began to transform the natural world by starting to farm. In the process, changing not just the landscape, but plants, animals and, above all, ourselves. And I#39;m going to be focussing on two favourite pastimes - food and sex.下一周,我将继续去探索近万年前,我们是如何去将自然世界改造成农场。在此过程中,改变的不仅仅是地貌景观,还有植被、动物,还有最重要的我们自身。而且我将聚集于人类最喜爱的两种消遣方式——食欲与性欲的满足。 Article/201403/280582上海去痣要的价格

上海市浦东新区中医医院打玻尿酸多少钱 Plants have a family tree植物的历史stretching back nearly half a billion years.可回溯至将近五亿年前They have developed an extraordinary range of strategies to survive.它们为了生存 发展出许多让人惊奇的策略This tree is a bristlecone pine.这是一棵刺果松It#39;s taken thousands of years to reach this size.它花了几千年才长到这么大It has seen empires rise and fall,它看尽帝国崛起,衰微kings, queens and presidents come and go王朝兴盛更迭and may have seen the sun rise more than 1.5 million times.而且可能历经了 一百五十多万次的日出日落Bristlecone pines are the oldest living things on Earth.刺果松是世界上最长寿的生物Bamboo is the fastest growing plant.竹子则是生长速度最快的植物It will be full-grown - 30 metres tall - in just 90 days.短短九十天 就能长到三十公尺高Like animals, plants are constantly competing for food.植物和动物一样 无时无刻不在抢夺食物Striving to produce offspring努力繁衍后代and battling against predators.对抗掠食动物They will deceive and, in some cases,有的会欺瞒拐骗they will even hunt.有的甚至会猎食 Article/201310/262144上海市第一人民医院双眼皮多少钱上海玫瑰整形医院激光去痣

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