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西安市胃泰医院在哪里爱频道宝鸡妇幼保健院胃病胃肠怎么样

2019年12月10日 20:51:20
来源:四川新闻网
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NASA has discovered alien life but it is right here on Earth. The announcement, at a press conference at the space agency’s US headquarters, follows days of frenetic speculation that it was about to reveal the existence of life on another planet.   美国宇航局(NASA)近日通过发布会对外宣称,科学家在地球上发现“外星生物”,这种新微生物的发现为人类在宇宙其他星球寻找生命带来了新的希望  While the truth an ‘alienbacterium lurking deep within a Californian lake is rather closer to home, it markedly raises the odds of ET’s existence. The excitement lies in the bug’s ability to eat and thrive on arsenic, one of the most toxic chemicals on the planet. It can even incorporate arsenic into its DNA, making it part of its very being.   据悉,NASA天体生物学家从加利福尼亚州莫纳湖湖底收集了一些微生物,这种微生物可不是普通的微生物,它可以像其他生物一样利用磷完成生命功能,但如果需要,它能用砷替代磷,并且依靠剧毒的砷进行新陈代谢。这一科学史上的重大突破让人类在寻找外星人ET的道路上更进一步  All 'known' life requires six fundamental elements - carbon, hydrogen, nitrogen, oxygen, phosphorous and sulphur - which provide the building materials for DNA, proteins and fats. As every other form of known life uses phosphorus rather than arsenic as a key building block of its DNA, the find suggests that a second form of life is with us, right here one Earth.   众所周知,地球上的生命是由六大元素组成,它们分别为:碳、氢、氮、氧、磷和硫,这六大元素组成了生物体内主要的有机化合物,如蛋白质、核酸等。原本,这六种生命元素被视作无可替代,但最新的研究发现实,这种新发现的微生物能将剧毒元素“砷”代替“磷”,并完成自身的新陈代谢活动,而砷的氧化物形式就是人们熟知的毒药砒霜 /201012/120008西安市第九医院看肠胃病好吗America will halve its reliance on Middle East oil by the end of this decade and could end it completely by 2035 due to declining demand and the rapid growth of new petroleum sources in the Western Hemisphere, energy analysts now anticipate.能源分析师预测,由于需求不断下降和西半球新石油来源的迅速增多,美国将在2020年之前把从中东进口石油的数量削减至一半,并可能在2035年之前彻底摆脱对中东石油的依赖。The shift, a result of technological advances that are unlocking new sources of oil in shale-rock formations, oil sands and deep beneath the ocean floor, carries profound consequences for the U.S. economy and energy security. A good portion of this surprising bounty comes from the widesp use of hydraulic fracturing, or fracking, a technique perfected during the last decade in U.S. fields previously deemed not worth tampering with.这一转变的原因在于,由于技术上的进步,页?的?层、油砂和洋底深处的石油资源得以释放。这一转变将为美国经济和能源安全带来深远影响。这一让人惊喜的转变有很大一部分要归功于水力压裂技术。在过去0年里,水力压裂技术逐渐完善,让过去不被看好的美国油田由此得到开发。By 2020, nearly half of the crude oil America consumes will be produced at home, while 82% will come from this side of the Atlantic, according to the U.S. Energy Information Administration. By 2035, oil shipments from the Middle East to North America ;could almost be nonexistent,; the Organization of Petroleum Exporting Countries recently predicted, partly because more efficient car engines and a growing supply of renewable fuel will help curb demand.美国能源情报Energy Information Administration)表示,到2020年,美国自产原油将能够满足将近一半的国内需求,其中82%的资源来自大西洋西岸。石油输出国组织(Organization of Petroleum Exporting Countries)最近预计,035年,从中东到北美的石油运输将几乎完全消失,部分原因在于,更节能的汽车引擎和可再生燃料将帮助抑制对石油的需求。The change achieves a long-sought goal of U.S. policy-making: to draw more oil from nearby, stable sources and less from a volatile region half a world away.;Whereas at one point there were real and serious concerns about the ability to maintain sustainable access of supplies to the ed States if there were disruptions in the Middle East, that has changed,; Carlos Pascual, the top energy official at the State Department, said in an interview.这个变化实现了美国政策制定者一个长期追求的目标:从周边地区和稳定来源获得更多石油,减少对遥远且动荡不安地区的石油依赖。美国国务院负责能源事务的最高官员帕斯夸Carlos Pascual)在接受采访时说,尽管曾经一度确实有人担忧如果中东石油供应出现中断,美国能否保持可持续的石油供应,但是如今这种状况已经改变。U.S. officials stress that the Middle East will remain important to American foreign policy partly because of the regions continuing influence on global oil prices. ;We need to continue to pay attention to how global markets function, because we have a fundamental interest that those markets are stable,; Mr. Pascual said.美国官员强调说,中东在美国的外交政策中依然处于重要位置,部分原因在于该地区将继续对全球石油价格造成影响。帕斯夸尔说,我们需要继续关注全球市场的运转,因为市场稳定符合我们的根本利益。That means the U.S. military will keep guarding the regions oil shipping lanes, as it has done for decades. ;Nobody else can protect it and if it were no longer available, U.S. oil prices would go up,; said Michael OHanlon, a national security expert with the Brookings Institution, who says the U.S. spends billion a year protecting oil shipments. But China, a growing consumer of Middle Eastern crude, is seeking a larger presence in the region, with its navy joining antipiracy efforts near Somalia.这意味着美国军方将沿袭几十年来的做法,继续保卫该地区石油运输线路的安全。布鲁金斯学Brookings Institution)的防务专家奥汉隆(Michael OHanlon)说,没有任何一个其他国家能够保护该地区的石油运输线路,如果这些线路不能正常使用,美国的石油价格将会上涨。奥汉隆说,美国每年花费500亿美元保护石油运输线路。越来越依赖中东原油的中国也在寻求扩大在该地区的影响力,中国的海军已经参与了在索马里附近实施的打击海盗行动。Still, growing domestic energy production could allow the U.S. to lessen its focus on the unpredictable region over time. Dependence on Middle East oil has shaped American foreign, national-security and defense policies for most of the last half century. It helped drive the U.S. into active participation in the search for Arab-Israeli peace; drove Washington into close alignments with the monarchies of the Persian Gulf states; compelled it to side with Iraq during its war with Iran; prompted it to then turn against Iraq after its invasion of Kuwait, bringing about the first Persian Gulf war; and prompted Washington to then build up and sustain its military presence in the region.尽管如此,由于国内能源产量不断增加,美国得以逐渐降低对这一充满变数的地区的关注程度。在过去半个世纪的大部分时间里,对中东石油的依赖极大地影响了美国的外交、国家安全和防务政策。它促使美国政府与波斯湾的独裁国家结盟,迫使美国在两伊战争中持伊拉克,让美国在伊拉克入侵科威特之后与伊拉克反目成仇,并因此引发了第一次海湾战争,也致使美国政府在该地区派驻并保留驻军。The renaissance of the U.S. oil patch is pushing down oil prices, giving a boost to the economy at a time when a global slowdown threatens to crimp demand. Research firm Raymond James lowered its 2013 forecast for U.S. crude prices this month to per barrel from , partly because production in the U.S. has risen much more quickly than previously expected.美国石油的复兴将导致石油价格走低,在全球经济放缓可能削弱需求的当口提振美国经济。研究公司Raymond James本月将对2013年美国原油价格的预期从每3美元下调到了65美元,部分原因是美国的原油产量增速高于此前的预期。来 /201206/188483天水市中心医院肠胃科属于几级甜食要什么甜食?A:What about the dessert?要什么甜食?B:A piece of apple pie, please.一块苹果馅饼(苹果派)同类问句:How about some dessert? 要甜食吗?Yes, some vanilla ice cream, please.对,来点儿香草冰淇淋Very good. And what would you like dessert? 很好甜食吃什么?还要别的吗还要别的吗A:Anything else?还要别的吗?B:No, thank you.不用了,谢谢同类问句:No, that enough. Thank you. 不要了,够了谢谢你 063榆林市中医院胃寒胃热反酸便血胃出血

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