2006年VOA标准英语-U.K. Terror Plot Boosts Development of Detectio

By Mil Arcega
Washington, D.C.
18 August 2006
 
watch Security report

The alleged¹ terror plot to use liquid explosives to bring down commercial jets over the Atlantic Ocean is fueling research into explosives detection technologies.  Several U.S. companies have already started promoting new devices.  But some security experts say even the most advanced detection techniques may not be enough to stop a terrorist attack.

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An obsolete³ plane is blown up in a test of the effects of explosives   
  
A plastic soda⁴ bottle looks harmless but explosives experts say its contents pack a powerful punch.

A controlled blast that destroyed a mailbox was made using common household chemicals and triggered by a simple electronic switch.

 
Mike Grimes 
  
Ohio explosives expert Mike Grimes says, aboard a commercial jetliner, the chemical cocktail⁵ could cause serious damage. "One person would smuggle⁶ one component⁷ on.  One person would smuggle another component on.  With a combination of all the components⁸ they could put it together in the aircraft and detonate it in flight."

Security experts say the key is to make sure the ingredients used to make liquid bombs are detected before they get inside an airplane.   Southern California electronics firm Rapiscan says its detector⁹ can see under clothing and determine if a liquid is harmless or dangerous.  Rapiscan vice² president Peter Williamson says the system will be commercially available in two months.

A display of a full-body scan of an airline passanger   
  
"What it does, it emanates¹⁰ neutrons¹¹ from the source, bombards the item under inspection," says Williamson. "That further radiates the atomic signature down to the atomic molecular¹² level and that will tell us exactly what the material is so we can differentiate¹³ various liquid threats, liquid explosives, from a bottle of wine, a bottle of water, from a bottle of hairspray."

The Ahura Corporation in the state of Massachusetts is using a much smaller device to identify chemicals inside sealed containers.  Company chief Douglas Kahn says right now the handheld device can detect up to 2500 chemicals. "This product, the 'First Defender¹⁴,' aims a light inside the bottle.  It then looks at the reflection of that light and it captures what we call a chemical signature, much like a fingerprint¹⁵."

 
The First Defender device can scan the contents of bottles
  
Aviation experts say the new devices show promise over current technology.  These $160,000 machines are called "puffers." They blow air around passengers to sniff¹⁶ for hazardous¹⁷ chemicals.  But there are only 93 of the machines deployed¹⁸ at 36 airports.

Congressman¹⁹ Ed Markey is a member of the Homeland Security committee. "Only 10 percent of airports have the equipment necessary to properly screen passengers for explosives before they go onto the planes," he said.

For now, airports around the world are employing a decidedly lower-tech approach.  The Transportation Security Administration says it is shifting resources to better train and hire thousands of airport security screeners around the country.

1 alleged   

a.被指控的，嫌疑的

参考例句：

• It was alleged that he had taken bribes while in office. 他被指称在任时收受贿赂。
• alleged irregularities in the election campaign 被指称竞选运动中的不正当行为

2 vice   

n.坏事；恶习；[pl.]台钳，老虎钳；adj.副的

参考例句：

• He guarded himself against vice.他避免染上坏习惯。
• They are sunk in the depth of vice.他们堕入了罪恶的深渊。

3 obsolete   

adj.已废弃的，过时的

参考例句：

• These goods are obsolete and will not fetch much on the market.这些货品过时了，在市场上卖不了高价。
• They tried to hammer obsolete ideas into the young people's heads.他们竭力把陈旧思想灌输给青年。

4 soda   

n.苏打水；汽水

参考例句：

• She doesn't enjoy drinking chocolate soda.她不喜欢喝巧克力汽水。
• I will freshen your drink with more soda and ice cubes.我给你的饮料重加一些苏打水和冰块。

5 cocktail   

n.鸡尾酒；餐前开胃小吃；混合物

参考例句：

• We invited some foreign friends for a cocktail party.我们邀请了一些外国朋友参加鸡尾酒会。
• At a cocktail party in Hollywood,I was introduced to Charlie Chaplin.在好莱坞的一次鸡尾酒会上，人家把我介绍给查理·卓别林。

6 smuggle   

vt.私运；vi.走私

参考例句：

• Friends managed to smuggle him secretly out of the country.朋友们想方设法将他秘密送出国了。
• She has managed to smuggle out the antiques without getting caught.她成功将古董走私出境，没有被逮捕。

7 component   

n.组成部分，成分，元件；adj.组成的，合成的

参考例句：

• Each component is carefully checked before assembly.每个零件在装配前都经过仔细检查。
• Blade and handle are the component parts of a knife.刀身和刀柄是一把刀的组成部分。

8 components   

（机器、设备等的）构成要素，零件，成分； 成分( component的名词复数 )； [物理化学]组分； [数学]分量； （混合物的）组成部分

参考例句：

• the components of a machine 机器部件
• Our chemistry teacher often reduces a compound to its components in lab. 在实验室中化学老师常把化合物分解为各种成分。

9 detector   

n.发觉者，探测器

参考例句：

• The detector is housed in a streamlined cylindrical container.探测器安装在流线型圆柱形容器内。
• Please walk through the metal detector.请走过金属检测器。

10 emanates   

v.从…处传出，传出( emanate的第三人称单数 )；产生，表现，显示

参考例句：

• He emanates power and confidence. 他表现出力量和信心。
• He emanates sympathy. 他流露出同情。 来自辞典例句

11 neutrons   

n.中子( neutron的名词复数 )

参考例句：

• The neutrons and protons form the core of the atom. 中子和质子构成了原子核。 来自《简明英汉词典》
• When an atom of U235 is split,several neutrons are set free. 一个铀235原子分裂时，释放出几个中子。 来自《简明英汉词典》

12 molecular   

adj.分子的；克分子的

参考例句：

• The research will provide direct insight into molecular mechanisms.这项研究将使人能够直接地了解分子的机理。
• For the pressure to become zero, molecular bombardment must cease.当压强趋近于零时，分子的碰撞就停止了。

13 differentiate   

vi.(between)区分；vt.区别；使不同

参考例句：

• You can differentiate between the houses by the shape of their chimneys.你可以凭借烟囱形状的不同来区分这两幢房子。
• He never learned to differentiate between good and evil.他从未学会分辨善恶。

14 defender   

n.保卫者，拥护者，辩护人

参考例句：

• He shouldered off a defender and shot at goal.他用肩膀挡开防守队员，然后射门。
• The defender argued down the prosecutor at the court.辩护人在法庭上驳倒了起诉人。

15 fingerprint   

n.指纹；vt.取...的指纹

参考例句：

• The fingerprint expert was asked to testify at the trial.指纹专家应邀出庭作证。
• The court heard evidence from a fingerprint expert.法院听取了指纹专家的证词。

16 sniff   

vi.嗅…味道；抽鼻涕；对嗤之以鼻，蔑视

参考例句：

• The police used dogs to sniff out the criminals in their hiding - place.警察使用警犬查出了罪犯的藏身地点。
• When Munchie meets a dog on the beach, they sniff each other for a while.当麦奇在海滩上碰到另一条狗的时候，他们会彼此嗅一会儿。

17 hazardous   

adj.(有)危险的，冒险的；碰运气的

参考例句：

• These conditions are very hazardous for shipping.这些情况对航海非常不利。
• Everybody said that it was a hazardous investment.大家都说那是一次危险的投资。

18 deployed   

（尤指军事行动）使展开( deploy的过去式和过去分词 )； 施展； 部署； 有效地利用

参考例句：

• Tanks have been deployed all along the front line. 沿整个前线已部署了坦克。
• The artillery was deployed to bear on the fort. 火炮是对着那个碉堡部署的。

19 Congressman   

n.（美）国会议员

参考例句：

• He related several anecdotes about his first years as a congressman.他讲述自己初任议员那几年的几则轶事。
• The congressman is meditating a reply to his critics.这位国会议员正在考虑给他的批评者一个答复。