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2019年09月19日 21:34:16来源:同城媒体

The company says 96 men died.公司称96人在事故中身亡The workers claim its hundreds.工人们说其实有好几百人The tunnels are finished 11 months ahead of time.隧道提前11个月完工But thats just the beginning of the Hoover Dam.但对于胡佛水坝来说 这只能算是开了个头The hardest job is yet to come:最大的困难还在前面building the biggest concrete structure on earth.建起地球上最大的混凝土建筑Frank Crowe is driving ahead the building of the Hoover Dam,弗兰克·克罗大力推进胡佛水坝的建设the biggest engineering project America has ever seen.这是美国前所未有的最大工程项目Hes driving his men hard.他要求快马加鞭The crews work day and night.工人们夜以继日地工作A sea of concrete rises in the canyon,一片混凝土的海洋在峡谷中拔地而起as thick as two football fields laid end to end.厚度相当于两个足球场并排的长度5,000 men, 50,000 machines and tools,五千工人 五万台机器和工具 the best engineers alive,当世最杰出的工程师enough materials to fill a train 1,000 miles long.所用原材料足以装满一列1000英里长的火车This is the 1930s equivalent of putting a man on the moon.这座大坝可谓20世纪30年代的;登月;计划6.6 million tons of concrete have to be poured.建造大坝要倾倒660万吨混凝土Thats enough to lay a 4-foot-wide sidewalk around the earth.足以铺设一条四英尺宽的人行道 环绕地球一圈How to pour that much concrete and get it where its needed?如何将如此大量的混凝土倾倒在特定的地点呢Frank Crowe designs the most sophisticated cable system ever built.弗兰克·克罗设计了历史上最为复杂的缆索系统Giant bottom-opening buckets.开底式巨桶They pour the concrete into molds exactly where it is wanted.能将混凝土准确地倒入指定地点的模具中 /201301/220258。

  • Jay Walker的人类想象力图书馆。201304/236218。
  • The nation got a report card on obesity today, and the country flunked. Despite all attempts to attack the problem, a new survey shows the adult obesity rate increased in 23 states last year and no state showed a decline. Here’s Dan Harris.The battle against obesity has been going on for years, with officials doing things like taxing sugary sodas, putting healthier foods in schools and requiring longer, tougher gym classes. But still, Americans keep getting fatter. Today’s study says the fattest state is Mississippi, where nearly a third of all adults are obese. The slimmest state is Colorado, but even there 19% of the adults are obese. Childhood obesity rates have tripled since 1980. Again it’s worst in Mississippi, where 44.4% of children between 10 and 17 are either obese or overweight. This trend may only be exacerbated by the recession as the price of healthy foods rises and so do rates of depression and stress which are often linked to obesity. This crisis is sure to weigh all of us down eventually because obese people require more expensive health care, as president Obama noted today at a health care forum.Obama: If we can help somebody control obesity, they are less likely to get diabetes. And if they are less likely to get diabetes that means that we are gonna be saving a whole lot of money in hospital costs. The authors of today’s report say the government needs to take rapid and dramatic steps, perhaps regulating food advertising to children as has been done in some countries in Europe.Kelly: this just has to stop if we are going to have any hope of dealing with obesity problem. The study’s authors also say the government needs to start thinking out of the box, things as simple as requiring new communities to have good sidewalks for people to run and walk on could help they say. 07/76531。
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