英语presentation制作

1、When you hear about drones, unmanned aircraft you might think about them flying over Afghanistan. These are remote controlled vehicles, and they are used a lot by the U.S. military in the fight against terrorism. But drones could start popping up in the skies over the United States. Lisa Sylvester l

2、ooks at the capabilities and the concerns that might come along for the ride.(BEGIN VIDEOTAPE)LISA SYLVESTER, CNN CORRESPONDENT: Right now, only groups with special FAA permission, like the U.S. Customs and Border Protection can operate drones in the United States, but that is going to change: Congr

3、ess has asked the Federal Aviation Administration to find a safe way to expand the use of drones, or unmanned aerial systemsBEN WIITTES, BROOKINGS INSTITUTION: The bottom line is that by 2015, the FAA has to have a comprehensive plan to open the air space to both public and private UAS.SYLVESTER: Th

4、ink of the potential from crop dusting to news traffic reports to surveilling land to monitoring forest fires.There is a big industry pushing the federal government to open up the skies arguing these unmanned air craft systems are safer and less expensive.SYLVESTER: Unmanned aerial vehicles or drone

5、s can be as large as a fighter jet or only just a couple of feet long, and people have actually been flying unmanned vehicles or even model airplanes for years, but with certain restrictions. They cant fly them above 400 feet, or in certain areas like airportsThat brings us to one of the problems th

6、e FAA is trying to solve: how to ensure safety if the sky suddenly become a lot more crowded.KEVIN HIATT, FIGHT SAFETY FOUNDATION: Some of the larger concerns are the construction of the aircraft. Whos piloting them? The actual bandwidth. Also, taking a look at some of those social issues, which wev

7、e all started to look into as far as privacy.SYLVESTER: Its the privacy peace that Representative Edward Markey is most concerned about: could prying paparazzi hound celebrities? When can drones be used by law enforcement to gather evidence? And what about the information gathered by the drones?with

8、out running into problems with FAA.REP. EDWARD MARKEY, (D ), MASSACHUSETTS: Is it possible that this is just going to be a rampant, eyes in the sky gathering information about Americans with no rules, whatsoever.capability英英kepblti: 美美kepblti n.才能，能力；容量；性能；生产率I understand that your ship hasa limited

9、 faster-than-light capability?我了解到你的船有一定的超光速飞行的能力?Does foundation fieldbus have a high speed capability?基金会现场总线是否具有高速性能？drone英英drn 美美dron n.雄蜂；嗡嗡声；低音风笛；不务正业而依赖他人为生者v.发出嗡嗡声；混日子；（以低沉、单调的声调）谈Did you say that was an unmanned drone?你刚说那是无人驾驶飞机吗?The drone of the engine made her sleepy.发动机的嗡嗡声使她困倦。monitor英

10、英mnit 美美mnt n.显示屏，屏幕；计显示器；监测仪；监控人员，班长vt.监控，监听；搜集，记录；测定；监督vi.监视Are if sells in that gigantic monitor?是否在那个巨人般的监视器中卖?Id christys new whole monitor friend.指认出克里斯蒂的新监视者朋友。federal英英fedrl 美美fdrl, fdrladj.联邦（制）的；同盟的n.联邦主义者；同盟盟友He paid his federal taxes?他缴纳了联邦税款?What party is the official opposition at the

11、federal level?在联邦政府的层面，哪一个党是反对党？privacy英英praivsi 美美pravsi n.隐私，秘密；隐居；私事；不受公众干扰的状态Here is a mans privacy.这里是一个人的隐私。Famous people often find their privacy is invaded by the press.名人们常常发现其个人隐私受到新闻界的侵犯。enforcement英英nf:smnt 美美nfsmnt n.强制，实施，执行Security enforcement is valid only for verifiably type-safe co

12、de.安全强制仅对可验证的类型安全代码有效。Provided by jukuuA special law enforcement agent of the us treasury.美国财政部的法律执行特派员.rampant英英rmpnt 美美rmpnt adj.蔓延的；猖獗的；（指动物）只用后腿站立的；（植物）疯长的Kandahar is the taliban in afghanistan rampant areas.坎大哈省是阿富汗塔利班武装活动猖獗的地区。In an uncontrolled and rampant manner.以不受控制的、蔓生的方式。pry英英prai 美美pra

13、vi.窥探，打探vt.撬开，撬动；费力地得到n.窥探；撬杠；爱打探的人Use to beat, drill or pry.用来拍打、钻或撬东西。He used to pry a hole in the fence.他曾经窥探护栏的洞口。航天飞机的设想产生于20世纪60年代末，正是“阿波罗”登月计划即将取得成功的时候。1969年7月16日，美国使用“土星5”号运载火箭将载有3名航天员的“阿波罗11”号飞船送入空间，7月21日登月成功。而后，由美国副总统领导的专门研究载人航天下一阶段发展方向的小组，建议发展空间运输系统，并优先发展作为该系统支柱的航天飞机计划。航天飞机计划分两个阶段实施，第一阶段是

14、试验阶段，用“企业”号和“哥伦比亚”号航天飞机进行地面试验、进场和着陆试验以及研制性飞行试验。第二阶段是生产阶段，完成其他航天飞机的生产，并将它们投入运营，设想每年进行航天飞行任务60次。 美国的航天飞机最初是根据“飞回”（flyback）想法设计的，它共有两级，均有人驾驶，可像飞机一样飞回并水平着陆，第一级是一个庞大的、有翼的、以火箭为动力的飞行器，它将携带较小的第二级，该运载工具可提供起飞动力并飞出大气层，然后释放轨道飞行器后返回地面，装有乘员和有效载荷的轨道飞行器在火箭发动机的推动下进入太空，完成使命后飞回地面。但是，因为航天飞机计划研制经费的不足，再加上1972年进入全面工程研制阶段后，液氢液氧主发动机技术难度大和防热瓦脱落而达不到技术指标，迫使NASA只好舍弃 “定期地、经济地进入太空”的最佳的完全可重复使用航天飞机设想，改为取消航天飞机内部燃料贮箱，使用一次性外挂燃料贮箱，并缩小轨道器的外形以降低研制费用，同时安全性高且使用费用低廉的液体助推器也被研究费用低的固体火箭助推器所替代。NASA希望重新设计的航天飞机每年可进行24次飞行任务。 1977年2月，“企业”号轨道器开始在爱德华兹空军基地进