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喀什祛痘多少钱百科在线

2019年08月22日 15:24:47 | 作者:88分享 | 来源:新华社
栏目简介:《趣味青春英语视频》是外语网络电台的精品节目,通过大讲堂的网络课堂形式,能够帮助英语学习者积累一些英语背景知识,并通过互动的教学形式,帮助有效记忆英语知识。本栏目是学习趣味青春英语的好材料。201511/399307Whats Wrong with Coal?煤炭怎么了?Its hard to believe that nearly forty percent of our countrys electricity still comes from coal, a dirty, outdated energy source. Coal not only causes health problems, but its also the main contributor to climate disruption.很难相信我们国家的电力将近百分之四十仍然来自于煤炭,一个肮脏、过时的能源。煤炭不只造成健康问题,它也是气候破坏的主要元凶。Just how bad is coal: in mountaintop removal mining, coal companies clear-cut forest and literally blow the tops off mountains to get the coal. This process dumps millions of tons of waste into our streets and poisons our drinking water. But mining coal is only the beginning.煤炭就是这么糟糕:在山巅移除开矿中,煤炭公司砍光森林树木然后一点也不夸张地把山的巅峰给炸掉去开矿。这个过程倾倒数百万吨的废弃物到我们的街道上,然后污染我们的饮用水。但开采煤矿只是开端而已。Burning coal generates smog, which can cause asthma attack, chest pains and breathing problems. In fact, one out of ten children in the US suffers from asthma, and its the number one reason kids miss school due to illness. The pollution from burning coal leads to twelve thousand emergency room visits and more than one hundred billion dollars in Health Cost every year.燃烧煤炭产生烟雾,那会造成哮喘、胸痛以及呼吸问题。事实上,美国每十名孩童中有一位受哮喘之苦,而且它是孩子们因病缺课的首要原因。燃烧煤炭的污染导致每年一万两千次的急诊室就诊以及超过一千亿美金于健保花费。Coal pollution also contains toxic mercury that damages the nerve system, and this is especially dangerous for babies and young children, because it can cause developmental problems. Mercury rains down into our oceans, rivers and lakes, contaminating our fish and seafood.煤炭污染也包含了损害神经系统的有毒水银,这对宝宝跟幼儿特别危险,因为它会引起成长方面的问题。水银随着雨水降入我们的海洋、河流和湖泊,污染我们的渔获和海产。And even after coal is burned, the waste thats left over is bad for our health. Each year, coal plants generate more than one hundred and forty million tons of toxic waste, called coal ash. Thats stored in thousands of pits across the country, enough toxic waste to fill more than four hundred thousand Olympic-size swimming pools. Living near a toxic coal ash pit can be worse for kids health than smoking a pack of cigarettes a day.甚至在煤炭燃烧以后,残留的废弃物对我们的健康有害。每年,煤炭厂产生超过一亿四千万吨的有毒废弃物,叫做煤灰。那被储存在遍及全国的数千个坑洞中,足够填满超过四十万个奥林匹克标准尺寸游泳池的有毒废弃物。住在有毒煤灰坑洞附近对孩子们的健康来说,可是比一天抽一包烟还要糟糕。The good news is that the ed States has become an international leader in reducing carbon pollution, largely because we are retiring coal plants and replacing them with clean, renewable energy nationwide.好消息是,在减少碳污染方面美国已经变成国际先锋,主要是因为我们正在全国让煤炭工厂退休并用干净、可再生的能源取代它们。The amount of electricity America gets from wind and solar power has more than doubled in the past few years. Iowa and South Dakota are aly getting more than twenty percent of their energy from wind power. And in 2012, ten states got more than ten percent of their energy from wind.过去几年美国从风力以及太阳能得到的电量已经不只翻倍。爱荷华州和南达科达州已经在从风力获取超过他们百分之二十的能源。而在2012年,十个州从风力获得了超过他们百分之十的能源。Coal is making us sick, and its time to make this toxic, outdated energy source history. Lets create a clean energy future for our country and for our kids. Lets move beyond coal.煤炭在让我们生病,该是时候让这有毒、过时的能源成为历史。让我们为国家和我们的孩子们创造一个干净能源的未来。让我们超越(舍弃)煤炭。201504/369897Mice were divided into four groups to examine different doses of the colour additive.老鼠被分成四组以检验不同剂量的酒黄石效果Tartrazine was given to a total of 60 mice酒黄石分三种不同剂量摄入60只老鼠,at three different doses plus one control group from where they were 5 weeks to 9 weeks old.此外还有一对照组老鼠都是5周至9周大The tartrazine was mixed and given as an oral tablet.酒黄石与其他物质想混制成口药片After nine weeks researchers analyzed the mices function and behaviour specifically九周后研究者分析了老鼠的行为活动looked at how long it would take for the mouse to turn over to its feet when it was placed on its back,尤其观察当老鼠被躺着放置时,他们自己站起来所用的时长how long it took for the mouse to bring its head up when placed upside down on an incline,当老鼠被倾斜着倒置时他们抬起头所用时长placing the mouse on a platform to determine its cliff avoidance将其放在平板上观察其悬崖回避能力and how the mouse swam and behaved when placed in water将其放入水中时它们的游泳与反应状态and a test to determine the mouses sense of smell by evaluating exploratory behaviour.通过其探究行为探究老鼠的嗅觉The results of the study determined Tartrazine did not affect the mices food intake研究结果显示,酒黄石不会影响老鼠的进食体重,or body weight and the litter size of the offspring birth rate were also not affected.而且老鼠每窝的仔畜数也没有受到影响It was determined that tartrazine affected the mices exploratory behavoiur据断定。酒黄石影响老鼠的探究能力but was most significantly seen in juvenile mice但在幼鼠中表现明显which suggested that it would the most effect third generations.且第三代幼鼠可能受到影响最大Another finding was that tartrazine accelerated the mices swimming ability especially with male mice.另一发现是酒黄石会使老鼠游泳能力加强,尤其是雄鼠Overall the three doses that were used in the study总之,研究中这三种不同剂量的摄入did not have any negative effects on reproduction and only a few effects on behaviour.没有对其繁殖产生任何不良作用,仅对其行为产生一点影响The dose level had the most significance in male mice which were the amounts that were greater than the recommended adequate intake.如果摄入量比建议摄入量高的话,雄性老鼠受到的影响更大Researchers determined that the levels of tartrazine humans consume would not produce any adverse effects.研究者断定,人类食用的酒石黄量不会造成任何不良影响Another research article that was mentioned in the study above published in 2007 in the Regulatory toxicology and pharmacology journal这项研究于2007年发表在杂志《管制毒理学与药理学》上的另一篇文章concluded that from prior research that tested tartrazine in mice for two years reported that总结称先前长达两年的对老鼠食用酒石黄的探究显示the occurrence of tumours and disease are not related to tartrazine in the diet.肿瘤的发现与相关疾病和饮食中的酒黄石没有关系Another finding from the study was that这项研究中的另一个发现是tartrazine was not absorbed by the body and was easily metabolized in the colon and excreted.酒黄石不会被人体吸收,而是易在结肠处发生新陈代谢并被排出体外Other various studies have also concluded that tartrazine has no carcinogenic effects其他多项研究也得出结论,酒黄石没有致癌作用and does not affect development or reproductive behaviours.不会影响机体发展和繁殖行为Currently tartrazine is considered safe by the FDA.目前食药局认为酒黄石是安全的201602/426793

Take this pool table.看这个桌球台The surface looks flat and smooth, but up close,表面看起来平整光滑,但靠近了看its actually anything but.实际并非如此Its full of gaps and holes.它的表面布满了裂缝和小孔Even something as smooth as a pool ball就连桌球这样的光滑事物has tiny crevices, wrinkles, and voids.都有小的裂缝,细纹和小孔Now, its easy to show that显而易见this is true in the first three dimensions,这在三维空间里毋容置疑but, trust me,但是相信我 its also true of the fourth dimension, as well.在第四维空间里这也是正确的There are tiny crevices, wrinkles, and voids在时间空间里in time.也有小的裂缝,细纹和小孔Down at the smallest of scales,不断地缩到最小的范围smaller even than molecules,甚至比分子原子还微小时smaller than atoms, we get to a place我们所得到的called the quantum foam.就是量子泡沫This is where wormholes exist.虫洞就存在于此Tiny tunnels, or shortcuts,在量子的世界里through space and time constantly form,穿越时空的微小隧道或捷径disappear, and reform within this quantum world.不断地形成,消失,再形成And they actually link two separate它们实际上连接了两个独立的区域places and two different times.和两处不同的时间Unfortunately, these real-life time tunnels are不幸的是,这种真实存在的时间隧道just a billion trillion trillionths of a centimeter across --只有10的-33次方厘米的大小way too small for a human to pass through.远不足以容纳人类通过But heres where the notion of wormhole time machines is leading.但虫洞时间机器的概念正带来更多灵感Some scientists think it may be possible to一些科学家认为或许可以捕捉capture one and enlarge it near trillions of times其中一个虫洞将其放大数万亿倍to make it big enough for a human让它大到足以能让人类or even a spaceship to enter.甚至宇宙飞船进入Given enough power and advanced technology,假设有足够的能量和高科技perhaps a giant wormhole could even be constructed in space.或许可以在宇宙中构造一个巨大的虫洞Im not saying it can be done,我不是说这一定可行 but if it could be,但如果真能面世it would be a truly remarkable device.它将是一个非常卓越的机器One end could be here near the earth,一端在地球附近and the other far, far away, near some distant planet.而另一端则在遥远的星际201507/384576

The official name of the mission is本次任务的正式名字Mars Science Laboratory.是火星科学实验室And with good reason.这名字是有来头的We have three different camera systems.我们有三套不同的摄像系统We have another instrument that involves a laser我们的一种装置可以发射激光that gives us the ability to zap out and understand让我们能够探测周围环境the composition of the environment around us.了解它的化学成分Weve got instruments that can ping things down in the subsurface我们有仪器可以探测地下and tell us if theres water down there.检测那里是否有水And then weve got other instruments还有其他仪器that can actually tell us about the laboratory conditions,可以向我们报告实验室自身的状况like what we would do on Earth.就像我们在地球上做的一样Its this chemistry lab, right in the belly of the Rover,这个位于火星车内部的化学实验室that makes the mission really special.是这次任务的特别之处What Curiosity can do,好奇号可以完成which has never been done before on a Rover mission,以往的火星车从未完成的任务is to actually drill a hole in the rock,它可以在岩石上钻孔take the powder and put it into the chemistry laboratory将取得的粉末放入火星车内部which is inside the Rover.也就是化学实验室中And that Im really excited about,这一点很让我激动because it takes us to a whole other level因为这让我们对火星的研究with science analysis on Mars.达到了一个全新的高度重点解释:1.tell about 告诉关于 ... 信息例句:Ill tell about your stealing the cakes.我要把你偷蛋糕的事说出去。2.drill a hole 钻孔例句:How long does it take to drill a hole?打一口井要多长时间?3.excited about 为 ... 所激动例句:She is very excited about winning the first prize.赢得首奖,她激动不已。 201601/424741

TED演讲集 那些匪夷所思的新奇思想201510/404733

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