英语翻译Fighting fires has always been a dangerous job.The job h

英语翻译
Fighting fires has always been a dangerous job.The job has grown even more risky in recent years.That’s because changes in building over the last 30 years have resulted in hotter fires that are more unpredictable.Today’s buildings use many moresynthetic materials than those built 30 years ago did.As a result,when they catch fire,they burn at a much higher temperature and give off much more energy than their older counterparts do.Furthermore,most modern buildings are extremely well insulated.That means that when they catch fire,they hold most of the fire’s heat.Hotter fires result in especially dangerous situations for firefighters.The fires themselves are dangerous,of course,but evenmore problematic are the super-hot gases created by the fires.These cause “extreme fire behaviors” a term firefighters use to describe quick-moving,life-threatening events at the scene of a fire.They include flashovers(跳火).Temperatures increases so greatly that some materials in an area burn up at once.They also include backdrafts(反风流),during which oxygen rushes into an area,causing a fireball.The most dangerous effect of a backdraft is that it can actually take in all the oxygen out of a room where firefighters are working.Finally,there are gas explosions(爆炸).They happen when extreme heat causes gases to spread quickly.American firefighters have worked hard to fight against the dangers of modern firefighting.Unfortunately,death rates have remained nearly unchanged during the last 30 years.That’s a poor showing compared to Sweden and Great Britain.Both of those countries have cut death rates among firefighters in half over the same period.Why are the British and the Swedes more successful at protecting their firefighters?Some within the firefighting community believe it’s because both countries use a procedure called “3-D firefighting.” For now,most American fire companies will stick with firefighting strategies and believe that 3-D technique(技术) cannot be effective.Supporters of the technique claim that it greatly reduces the likelihood of an extreme fire behavior.In 2002,the fire department of Gresham,Oregon became the first in the United States to accept 3-D firefighting techniques.The company’s battalion chief,Ed Hartin,has become a supporter for the procedure,conducts trainings,and has written a book on the subject.Maybe the use of 3-D firefighting is held back by its cost in the United States.

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灭火一直是一个危险的工作.近年来工作变得更加危险.这是因为变化的建筑在过去30年已导致越来越火,更不可预测的.今天的建筑材料使用许多moresynthetic比30年前建造了.因此,当他们失火,烧毁在更高温度和释放更多的能量比他们年长的做.此外,大多数现代建筑是非常好的绝缘.这意味着当他们失火,他们认为最火的热.热火灾造成了特别危险的情况下的消防队员.火灾本身是危险的,当然,但更多的问题是超热气体所造成的火灾.这些“极端火灾行为”一词用来描述快消防员,威胁生命的事件在火灾现场.它们包括闪络.温度增加很大的一些材料在一个面积烧伤在一次.它们还包括backdrafts,在氧气冲进区,造成一个火球.最危险的影响,燃就是它实际上可以在所有的氧气,房间里的消防员的工作.最后,有煤气爆炸.这些发生在极端热使气体迅速蔓延.美国消防队员的努力工作,以对抗危险的现代消防.不幸的是,死亡率仍然几乎不变,在过去30年.这是一个糟糕的表现相比,瑞典和英国.这两个国家减少死亡率之间的消防队员在半在同一时期.为什么英国和瑞典人更大的成功,保护消防队员?一些在消防界认为这是因为这两个国家使用的程序称为“三维灭火.”现在,大多数美国消防公司将坚持与消防策略和认为,三维技术不能有效.支持者认为它的技术大大降低的可能性,一个极端的火行为.2002,火系的格雷沙姆,俄勒冈成为第一个在美国接受三维消防技术.公司的营长,埃德hartin,已成为一个支持者的程序,进行培训,并写了一本书的主题.也许这阻碍了其在美国的成本.