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禄劝彝族苗族自治县花龟亚达伯拉象龟金头闭壳龟黑颈乌龟金钱龟大头乌龟价格怎么养平乐县苏卡达象龟地龟刺山龟麝香龟欧洲陆龟日本石龟哈米顿氏龟价格怎么养常山县花龟亚达伯拉象龟金头闭壳龟黑颈乌龟金钱龟大头乌龟价格怎么养 Millions of people in five countries across the Horn of Africa are gripped by severe drought and have been for months. But now in one of those countries, Somalia, the UN says that the situation is so bad in some areas, there is famine for the first time in 20 years.几个月以来,非洲之角的5个国家上百万人民正遭受严重的干旱。据联合国消息,在其中一个国家索马里旱情极为严重,该地区20年以来第一次遭受到饥荒的威胁。;The state of famine exists in parts of Bakool and Lower Shabelle, regions of southern Somalia. The rest of southern Somalia is close to famine. In some parts of Somalia, malnutrition rates have reached extraordinarily high levels of 50% for children under five.;“位于索马里南部的巴利勒和下谢贝利出现了饥荒,其余的南部地区也将遭此厄运。在索马里的部分地区,5岁以下儿童的营养不良率高峰时达到50%。”The UN has officially declared two parts of Somalia to be in famine and made the worst drought in east Africa for 60 years. The areas are most affected in the south of Somalia where estimated 310,000 people are acutely malnourished. More than 166,000 Somalis have fled the country since the start of the year. This aerial photographs from NASA showed how the Sahara Desert is pushing further south into Africa and the dust clouds swirling over the area all add to the drying up of thousands of square miles of land on which millions of people are trying to eke out of their lives.联合国正式宣布索马里南部两个地区出现饥荒,这两个地区正在经历60年来最严重的旱灾。据估计,在索马里南部受灾最为严重的地区有31万人极度营养不良。自今年初,有超过166,000名难民逃离索马里。美国国家航空总署高空拍摄的照片显示,撒哈拉沙漠正在进一步南移,扩大至非洲,涡旋在非洲上空的沙尘云会加剧这场干旱。在这片上千平方英里的土地上,上百万人口在挣扎着勉强维持生计。For weeks, there has been a mass migration of people from the worst affected areas, particularly in Somalia, to the vast and overflowing refugee camp at Dadaab in northern Kenya. The International Development Secretary Andrew Mitchell was there last weekend and says, ;doing nothing is not an option;.几个星期以来在受灾最严重的地区,尤其是索马里,大量人口迁移到肯尼亚南部达达阿布难民营,它号称是这个世界上最大的难民营。国际发展委员会秘书安德鲁·米切尔上星期在这里视察时说道“这样下去绝不是办法。”;Unless the international community now puts its shoulder to the wheel and significantly reinforces the effort which Britain has led so far, then I fear that many very young children will die as a result of this.;“除非国际社会鼎力相助,大力持英国政府的人道主义援助工作,否则还会有许多儿童死于营养不良。”Somalia is being hamstrung by internal strife for decades with the Al-Qaeda affiliated Al-Shebaab group making the security situation too precarious for many aid organizations to function properly.索马里几十年来因内部争斗而四分五裂。“基地”组织的附属机构Al-Shebaab group使很多儿童组织的处境更加危险,因此不能充分发挥其职能。201205/183719The word “bacteria” likely conjures up nasty images in your mind of E. coli, several strains of which are a common cause of food poisoning. Youre reminded of the Black Death, a series of bacteria-inspired plagues that swept through 14th century Europe. Where To Find Bacteria? But bacteria are not so isolated from us physically. To be found only in some contaminated foods stuff, like some bad E. coli.一听到“细菌”这个词,便会让人们联想到恶心的大肠杆菌的画面,其中有几种大肠杆菌常常引起食物中毒。你还会想起14世纪席卷欧洲大陆的黑死病,这也是由于细菌引发的瘟疫。细菌存在于哪里?细菌并不能离开宿主独立存在。例如一些糟糕的大肠杆菌会寄生在被污染的食物内。In fact, they can be found almost everywhere on and in the human body—on our skin, in our mouths, guts, kidneys—just to name a few, and they are present in almost unbelievable numbers. On average, a human body has about ten times more bacteria cells living in and on it, than it has human cells.实际上,在人体表面或者体内都能发现细菌——皮肤上,口腔内,内脏和肾脏内都能找到,数不胜数,而且细菌的数量庞大得令人难以置信。平均来说,寄生在每个人体内的细菌细胞数量比人体细胞多十倍。So in a very real sense, youre more bacteria than human. Additionally not all bacteria are such bad guys, in fact quite the opposite is true. Your skin, for example, hosts a zoo of friendly bacteria that fight off real micro bad guys, giving you a sort of “invisible armor” against harmful intruders.因此从本质上讲,你比人类更细菌。此外,并不是所有的细菌都有害,事实上却完全相反。例如你的皮肤上就寄生了各种友好的细菌,它们抵抗真正有害的微生物,为你提供一种“无形的护甲”以抵挡有害入侵。And you have trillions more bacteria in your intestines helping you digest your food, and keeping your immune system running strong. And further studies have found that some bacteria in the human gut may help adults ward off kidney stones and prevent children from developing asthma.而且你的肠道内也寄生着上万亿的细菌,帮助你消化食物,维护你的免疫系统正常运行。进一步的研究发现内脏里的一些细菌有助于成年人预防肾结石,防止小孩患上哮喘。So the next time you hear the word “bacteria”, dont let the few rotten apples spoil your opinion of the whole bunch, for many more of them are your friends than are your enemies.因此,下次你再听到“细菌”这个词时,不要再让烂苹果坏了你对细菌的印象,因为友好细菌还是远多于有害细菌的。原文译文属!201212/213272中部锦乌龟怎么样好养吗

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真鳄乌龟饲养方法技术技巧 We have simulated human Mars exploration stations in the Canadian High Arctic and the American desert, where we can actually practice Mars missions and see what might work and what wont. The Mars Society has now run about 17 different crews between the Arctic and the desert stations.我们已经在加拿大北极高地和美州沙漠模拟建设了火星探测站,在这里我们可以真正地实践登陆火星的任务,看看什么可行什么不可行。目前有17名火星协会成员负责管理这两处探测站。Through NASAs educational activities, weve been working with the Mars Society to encourage this sort of astronaut training.通过美航天总局的教育活动,我们一直在与火星协会合作,鼓励培训合格的火星宇航员。These trips give its participants a taste of what awaits them on Mars.这些训练让参加者提前体会到在火星上等待他们的是什么。Im gonna be in this position here. Im gonna be the geologist. Ill be scouting for samples...我将会在这个位置。我将扮演地质学家的角色。还会勘测样本...One of the most important things we do here is our EVAs—our extravehicular activities. When we go for an EVA, we have to put our spacesuits, depressurize an airlock for one minute and then go out and conduct a EVA. Airlock is important because we need to depressurize down to the pressure of the Martian atmosphere, so when we open the hatch, it doesnt, its supposedly decompressed.其中我们在这里最重要的任务是舱外活动(EVAs)。当我们进行舱外活动时,我们需要穿戴太空,减压一个气闸一分钟,然后出去执行舱外活动。气闸很重要,因为我们需要降低气压,与火星环境的气压保持平衡,因此我们打开舱盖时,就不会解压。Well go 70 meters for a next location...距离下一个位置有70米...Roger that.收到。The job on Mars, the work that they are there to do is outside, and that work has be done in spacesuits.在火星上,他们的工作地点在舱外,必须穿着太空才能干活。But what will the Martian spacesuits of the future look like? At MIT they are reinventing the spacesuit from scratch.但是未来登录火星专用的太空会是什么样子呢?在麻省理工学院,他们重新革新了太空。The human mission tomorrow is really gonna push the limits of what we can do. We really want to think of a revolutionary design and technologies that could allow us to provide a new suit for Mars exploration.明日的人类计划将真正推动人类的极限。我们真的需要设想出一个创新的设计和工艺,让我们能够制作出新式的火星探险太空。Dava Newman is a professor at MIT, her specialty is human space flight.纽曼是麻省理工学院的教授,她的专长是人类太空飞行。One of the really important challenges is how do we keep a people alive. How do we keep astronauts alive. The current spacesuit is great, but it does have a few limitations, namely, its really heavy. The massive, the current system is about 140 kilos thats pushing 300 pounds. Its wonderful if you are weighed in this environment, but of course, we need a new system for Mars.其中最具挑战性的是如何维持生存。如何保持宇航员们在火星上生存。当前的太空很棒,但也存在一些局限性,也就是说它太重了。目前这个庞大的系统大约有140公斤重(将近300磅)。在这里的环境中140公斤不算什么,当然登录火星我们需要一套新的装备系统。原文译文属!201208/195154长身蛇颈乌龟批发采购价格报价象山县黄缘盒亚洲巨龟加拉巴哥象龟锯缘龟缅甸陆龟黄头庙龟价格怎么养



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