原标题: 大良容桂伦教勒流街道治疗阳痿多少钱58养生
Nitrate containing compounds in the soil are generally soluble and ily migrate with ground water.含有硝酸盐的物质可以在土壤中分解并且污染地下水,Increased nitrate levels can present health risks to children.硝酸盐含量过高会影响儿童的身体健康Contaminated food stuffs, prepared baby foods,儿童饮食中一些食材受到污染and sausage preserved with nitrates and nitrites have caused exposure in children.以及含有亚硝酸盐和硝酸盐的香肠都对儿童的身体有害,Although vegetables are seldom a source of acute toxicity,尽管蔬菜通常并不会造成中毒,they account for more than 70% of the nitrates in a typical human diet.但人类饮食中70%的硝酸盐来自于蔬菜Cauliflower, spinach, collard greens, broccoli,花菜,菠菜,羽衣甘蓝嫩叶,花椰菜,and root vegetables have naturally greater以及根菜中的硝酸盐成分nitrate content than other plant foods do.都要高于其他食物The remainder of the nitrate in a typical diet comes from drinking water, about 21%,剩下的硝酸盐主要来自饮用水,大概占21%,and about 6% from meat and meat products in which还有6%来自于肉类和肉制品,因为为了保存sodium nitrate is used as a preservative and color enhancing agent.在它们的制作过程中用了硝酸钠For infants who are bottle fed,对于奶粉喂养的婴幼儿来说however, the major source of nitrate exposure in drinking water is used to mix powdered milk formula.硝酸盐的主要来源是饮用水和配方奶粉It appears that organic production of food results in有机食品中的硝酸盐含量lower nitrate levels most likely because nitrates are更低,这其中的原因或许是因为not allowed in organic food production.在有机食品生产过程中禁止使用硝酸盐A study conducted by Baker et al in 2002 summarized the2002年由贝克和其他人进行的研究results of 18 studies comparing nitrate levels of organic and conventional foods总结了18项对比有机食物和传统食物中硝酸盐含量的研究,and found 127 cases where nitrate levels were higher in conventional foods发现其中127例中传统食品的硝酸盐含量高43 cases where nitrate levels were higher in organic foods,43例中,有机食品的硝酸盐含量高and 6 cases where no difference was noted.另外6例中,两者的硝酸盐含量相当The Baker study demonstrates that organically贝克的研究表明,有机食物中的硝酸盐produced foods have lower detectable nitrate levels含量较低,由于有机食品生产过程中which is not surprising given that nitrates arent used in conventional farming.禁用硝酸盐,这一点不足为奇Now lets look at the issue of nitrate in drinking water,下面我们来看看饮用水中的硝酸盐含量and what this means to you.这对你来说意味着什么The major sources of nitrates in drinking water are runoff from fertilizer use,饮用水中硝酸盐的主要来源是化肥的残留,leaching from septic tanks or sewage, and erosion of natural deposits.主要来自于化粪池和污水管道,还有自然沉积In 1974, Congress passed the Safe Drinking Water Act.1974年,国会通过了饮用水安全法案This law requires the EPA to determine the level of法律规定,环保局应当决定饮用水中contaminates in drinking water at which no adverse health affects are likely to occur.污染物的含量上限,以保不会对人体造成伤害,The EPA has set an enforceable regulation for nitrate called a环保局发布了强制性的监管条例,规定污染物的最高含量maximum contaminant level or MCL at这个最高含量标准也叫MCL10 milligrams per liter, or 10 parts per million.它的值为每升10毫克MCLs are set by considering cost, benefits,MCL的制定过程考虑到了公共供水系统and the ability of public water systems to detect and利用合适的处理技术对污染物remove contaminants using suitable treatment technologies.进行检测和去除过程中的成本,能力和利润,201511/410397栏目简介:《外国人在北京》是英语视频听力下面的子栏目,节目关注在北京生活的外国人的时尚新生活。话题紧紧围绕网络生活,每日的话题内容按照网络热门固定划分为家居、汽车、数码、饰美容、健身、交友、美食等,了解外国人生活的同时通过网络互动提供一个中外人士互相帮助的平台。201509/398991TED演讲者们对这个世界各抒己见。201505/373016

When eventually he went home from hospital he was told he needed 24-hour nursing, and everyone was saying当最后他从医院回到家 他被告知他需要二十四小时监护 每一个人都说How is he going to go in and do work?Is he going to trail around with nurses after him in the office?他要怎么继续工作 工作时也要有护士陪着吗And of course he did.They talked originally of him working at home which he wasnt happy with.当然是那样 他们最初讨论让他在家工作 他对此并不满意And so, after a period of recuperation at home he just decided to go back into the office.所以 在家恢复了一段时间之后 他就决定回到他的办公室And hed make the trip from his house to the office which is, I dont know, half a mile in his wheelchair with a nurse walking along with him.而他从家到办公室的途中 我不太清楚 用轮椅走了半英里 有一个护士跟着他This is at the time when he was still driving around with the bag and the nasal drip going into the department, working, going back home.那时他依然到处转转 带着一个袋子和鼻滴 工作 回家I began to wonder what would happen when the universe stopped expanding and began to contract.我开始想象 当宇宙停止膨胀 开始收缩之后 会发生什么Would we see broken cups gather themselves together off the floor and jump back onto the table?我们会看到破碎的杯子 自己合好 从地上跳回桌上Would we be able to remember tomorrows prices and make a fortune off the stock market?我们会记得明天的物价 在股票市场大赚一笔It seemed to me the universe had to return to a smooth and ordered state when it recollapsed.对于我来说 宇宙一定会回到一个平滑有序的状态 当它再次坍缩的时候If this were so, time would go backwards when the universe began to collapse.时间就开始倒退 当宇宙开始坍缩的时候201604/439153

;Commodore; Cornelius Vanderbilt grew up poor,贫穷出身的;船长;科尼利厄斯·范德比尔特but has created a railroad empire,但建立起了一个铁路帝国making him the richest man in the country.这也让他成为了国内最富有的人At 72, hes thirty years past the average life expectancy,72岁那年 他已超过平均预期寿命30岁and his competitors see him as weak.竞争者们都以为他变弱了Its a mistake theyll come to regret.但这是一个他们可能会后悔的错误Locked in a battle for control of the rail lines east of the Mississippi,密西西比河以东铁路线控制权的战役开启之后the Commodore is holding nothing back.船长毫无保留I want you to close the Albany Bridge.我希望你关闭奥尔巴尼桥Were gonna watch them bleed.我们将看着他们流血Vanderbilt controls the only bridge into New York City,范德比尔特控制着唯一一座进入纽约市的桥梁Americas busiest port.美国最繁忙的港口Seizing an opportunity, he sets up a blockade.找准机会后 他建立起了封锁This train will not be going any farther!这辆火车无法继续前行Shutting the bridge leaves millions of pounds of cargo封锁桥梁让数以百万磅计的货物unable to reach the rest of the country,无法送达国内其它地方and slowly bleeds his competitors dry.这让竞争对手慢慢流干了血Before their stock is worthless,在股票变得不值钱之前the presidents of the rival railroad竞争对手的主席们try to sell all their shares.努力抛售了手头所有的股份Word quickly reaches Wall Street,华尔街很快得到消息triggering a massive sell-off.股价大幅下跌Come on, put some money in that. Come on.来 加点钱在那上面New York Central shares are dropping fast.纽约中央铁路公司股价正在飞速下跌How low?低至多少 a share.20美元一股Buy everything you can.买下所有的股票Vanderbilt was buying all of that stock范德比尔特以最低价that suddenly flooded the market at rock-bottom prices.买下了股市上疯狂抛售的所有股票Three aces.三个AOoh, thats good.喔 太棒了In just days,几天时间内Vanderbilt takes control of the rival railroad,范德比尔特就控制了对手的铁路公司creating the largest single rail company in America.在美国建立起了独霸统治的铁路公司201602/427796栏目简介:《英语视频之Top5》是英语视频听力下的子栏目,栏目包含中英字幕,而且能够了解世界上5大新奇或者有意思的事物,比如美军飞行器、社交媒体、核武器等,通过简单有趣的讲述,能够提高学习英语的兴趣,积累一些英语知识,是比较生动的英语学习材料。201510/400358

TED演讲集 那些匪夷所思的新奇思想201603/429357You may have heard the saying ;the early bird gets the worm;,but when it comes to humans,do morning people really have an advantage over right owls?Does one come out on top as more intelligent or successful than the other in this battle over bed time? The somewhat surprising truth is that we have little say in sleep preference as its almost entirely genetically pre-determined.你可能听过“早起的鸟儿有虫吃”,而至于人类,起早的真比夜猫子好吗?就起床时间而言,一 类人真的会比另一类更成功吗?说实话,睡 眠倾向方面我们没啥好说的,因为这大多是由基因决定的。Chances are,if youre a night owl,it was likely passed down from an ancestor who was also a night owl.And from an evolutionary perspective.it makes sense;having individuals with varying sleeping patterns would allow for better protection of a group throughout day and right.Instead of everybody sleeping at one time,some people naturally stay up later,and some wake up earlier,aware of threats or predators while other sleep.很可能一只夜猫子,只是另一只夜猫子的后代而已。从进化的角度而言,这也不无道理;人群睡眠规律不同,有 助于更好地全天候保护这个群体。并非所有人都会同时入睡,一 些人熬得晚些,一些人醒得早,并 在他人睡觉时留心威胁和捕食者。But considering most modern societal activities happen between 9am-5pm,it may seem clear that night owls are put at a disadvantage.And researchers have actually coined the term ;social jet lag;to describe the sleep deprivation many experience to accommodate social norms.不过,介于大多现代社会活动都在上午9点到下午5点间,显然,夜猫子们略逊一筹。研究者们借“社交时差”一词,来描述人们为适应社会规范而产生的睡眠缺乏。For night owls,this social jet lag feels like living in a different time zone every single day.Considering chronic sleep deprivation has a direct effect on brain functioning,its no surprise that studies report night owl university students have lower overall grades.夜猫子们的“社交时差”就象每天住在一个不同的时区。慢性睡眠剥夺对大脑也有直接影响,无怪有研究表明,大 学夜猫子们的绩点更低。Not to mention early birds tend to display more positive social traits such as being proactive and optimistic,and are less prone to depression or addictions to nicotine,alcohol and food.And we can see these traits represented physically in the brain,particularly the white matter which helps neurons communicate.Night owls exhibit significantly less white matter and,as a result,there are fewer pathways for feel good hormones such as serotonin or dopamine to travel through.更不用说早起的人积极社交特征更多,比如,更积极,更乐观,不易焦虑,或是沉迷于纳尼克丁,酒 精或食物。这些特征在大脑内也有体现,在促进神经交流的白质中尤为明显。夜猫子的白质要少得多,因此,感 觉好好荷尔蒙,如 血清素和多巴胺,可 穿行的通路更少。But its not all bad for the late nighters.In fact,they tend to be much more creative,have been found to have higher cognitive abilities.and are known to be risk takers.What they lack in white matter,they make up in cortisol levels.不过,夜猫子们也并非罪该万死。其实,他们更有创造力,认知能力更强,更倾向于冒险。高水平的皮质醇也弥补了他们白质的缺陷。This stress hormone;gets your body y to face an immediate threat,contributing to their risk taking behaviour,which studies show can translate into opportunities and potentially more financial gain.Furthermore,even though morning people can be very energetic right after waking,they tend to lose steam faster than night owls throughout the day.这种“压力荷尔蒙”让你随时准备应对威胁,使他们更爱冒险,研究也表明他们更易抓住机会,挣得更多。此外,尽 管早起鸟起床后精神饱满,他们一天内精力下降的更快。Both sides perform eually well in reaction-time tests an hour after waking,but after 10 hours of being awake,night owls perform significantly better.Your inner clock is regulated by many proteins which are created from various genes in your DNA.Studies have even shown that a single change of the genetic code,near a gene called Period 1,can result in an hour difference in your waking time.在刚睡醒后,双方在反应时间比较上势均力敌,但起床10小时后,夜猫子的表现要好得多。你的生物钟由体内多种基因创造出的蛋白质共同管理。研究甚至表明Period 1 基因附近,一个基因序列变化会使你起床时间改变1小时。As crazy as it seems,scientists also found a correlation between these same genes and your time of death.The early risers were more likely to die around 11am,while the night owls were more likely to die before 6pm.What about teenagers,you say?Its true most tend to be night owls due to the hormonal changes during puberty,but this tends to wane out into your genetic default as you enter adulthood.疯狂的是,科学家也找到了这些基因与你死亡时间的关系。早起的鸟儿更可能在上午11时左右过世,夜猫子更多在晚上6点前。那年轻人呢,的 确,青 春期的荷尔蒙变化造就了无数夜猫子,不过,成 年后基因再度决定了一切。So while there may be some truth to early birds getting the worm,night owls arent exactly lagging behind in life.Theyre just lagging behind in time!因此,尽管早起鸟儿有虫吃有一定的道理,夜猫子并未沦落为人生输家。他们只是慢了半拍而已!201504/367531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。201507/385820

TED演讲集 那些匪夷所思的新奇思想201509/400089UNIDENTIFIED FEMALE: Time for the Shoutout.“大声喊出来”的时间到了!Between what two countries would you find the Chunnel?海底铁路隧道在哪两个国家之间?You know what to do.你知道该做什么!Is it China and India, Sweden and Denmark, Chile and Argentina, or Britain and France? Youve got three seconds. Go.是中国和印度、瑞典和丹麦、智利和阿根廷还有英国和法国?你有三秒钟的时间,开始!UNIDENTIFIED FEMALE: The Channel Tunnel, also known as the Chunnel, connects Britain and France. Thats your answer and thats your Shoutout.英吉利海峡隧道,也叫做Chunnel,连接了英国和法国。那就是你的,那就是你的大喊。AZUZ: The Chunnel, the Channel Tunnel, the Euro Tunnel is actually three tunnels. 海底铁路隧道、海峡隧道、欧洲隧道实际上是3条隧道。Two are for trains, one is for service and security. 其中两条是火车走的,另外一条是用于务和安全的。It stretches more than 31 miles under the English Channel. 隧道在英吉利海峡海底,长达31英里。And when it was built in the 1980s and 90s, it went way over budget, costing billions of euros. 这条隧道建于20世纪8、90年代,其花费远远超出预算,花了几十亿欧元。A proposed tunnel connecting Denmark and Germany wouldnt be as long, but it could be the longest that included both a road and a rail line.最近计划要修一条连接丹麦和德国的隧道,这条隧道应该没有英吉利海峡隧道长,但却是既有道路又有铁路的隧道中最长的。 /201504/370419Amur is imdis son.阿穆尔是益姆迪的儿子A partner in his fathers business.也是他父亲的工作伙伴On a trade mission that widens the horizons of mankind.在一次拓宽人类视野的贸易活动中Hundreds of miles from home, hes carrying a cargo of tin他带着一批锡 来到离家数百英里远之地 Mined in the mountains of Iran and Afghanistan.这些锡是在伊朗和阿富汗开采出来的Here you start to see the rise从中你可以看到of literally international trade.国际贸易的雏形Almost 4,000 years ago,在约四千年之前Traders like Imdi turn writing into something new.像益姆迪这样的贸易商给文字赋予了新的功能They literally make history.他们因此也书写了历史Hundreds of imdis letters on clay tablets survive.益姆迪的上百封信以泥板文书保存下来In one letter, to a business partner,在一封给商业伙伴的信中He writes about his son:他这样描述他的儿子:;Amur is only interested in food and beer.;阿穆尔只对吃喝感兴趣;He needs to learn to do what hes told.;他得学着干点正事;He needs to become a man.;;他得长大成人;The great value of the invention of the act of writing,文字这种发明的伟大价值was leaving all of us在于帮助后人a track record, a trail,追溯前人的成果与点滴what we now know as our history as human beings.这也正是我们所知的属于人类的历史But Amurs manhood is about to be tested.但阿穆尔要成为男子汉还有待考验201508/396083

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