英语听力：自然百科 探索世界奥秘之FBI(揭密联邦调查局)Unit5

If threw these nails out into the crowd, extremely deadly shrapnel.

Once the FBI knows what materials were used to build the bomb and how it was concealed¹, agents make a public appeal for information about the bomber².

Today in showing you this backpack of this reconstructed bomb here, we believe we've given every possible opportunity to recount to the public to refresh their memories and perhaps can follow additional information.

But Sachtleben reveals another secret for rebuilding bombs.

Actually go to a bombing range and use, and sometimes, thousands of pounds of explosives inside of a vehicle that we think similar to the one used, detonate it. Go out, measure the crater³, measure where the pieces were, were found, collect the evidence that we find there and compare it to what we had at the bombing scene.

There is also another reason for these dramatic recreations. These images give jurors an unforgettable look at the devastation⁴ a bomb can cause.

Sometimes, we'll actually go to our explosive range and reconstruct the device, detonate it, film that, so we can go into court and show that to the judge and jury.

Eric Rudolph, the man accused of the bombings of both the Olympics and the abortion⁵ clinic in Atlanta has yet to face a jury, he remains⁶ at large. But thanks to the Explosives Unit, McVeigh and Kaczynski will never again pose a threat to society. However, the FBI's ultimate goal is to catch terrorists before they strike.

Bridgeport, Texas, the residents of this sleepy farm town outside Dallas have no idea that their lives are in danger. That's because the people caught on this surveillance video are planning a terrorist attack.

The suspected bombers⁷ are members of the Ku Klux Klan. They are scheming to destroy the Mitchell Energy refinery⁸ as a diversion for another crime, an armored car heist which would fund the war they are planning against the US government.

But these terrorists are unaware⁹ that the FBI is watching their every move, that's because one of their own is secretly working undercover for the FBI as an informant.

crater: hole formed by the explosion of a mine or other explosive

heist: armed robbery(slang)

informant: (sometimes informer) is someone who provides information to law enforcement agencies

1 concealed   

a.隐藏的，隐蔽的

参考例句：

• The paintings were concealed beneath a thick layer of plaster. 那些画被隐藏在厚厚的灰泥层下面。
• I think he had a gun concealed about his person. 我认为他当时身上藏有一支枪。

2 bomber   

n.轰炸机，投弹手，投掷炸弹者

参考例句：

• He flew a bomber during the war.他在战时驾驶轰炸机。
• Detectives hunting the London bombers will be keen to interview him.追查伦敦爆炸案凶犯的侦探们急于对他进行讯问。

3 crater   

n.火山口，弹坑

参考例句：

• With a telescope you can see the huge crater of Ve-suvius.用望远镜你能看到巨大的维苏威火山口。
• They came to the lip of a dead crater.他们来到了一个死火山口。

4 devastation   

n.毁坏；荒废；极度震惊或悲伤

参考例句：

• The bomb caused widespread devastation. 炸弹造成大面积破坏。
• There was devastation on every side. 到处都是破坏的创伤。 来自《简明英汉词典》

5 abortion   

n.流产，堕胎

参考例句：

• She had an abortion at the women's health clinic.她在妇女保健医院做了流产手术。
• A number of considerations have led her to have a wilful abortion.多种考虑使她执意堕胎。

6 remains   

n.剩余物，残留物；遗体，遗迹

参考例句：

• He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
• The remains of the meal were fed to the dog.残羹剩饭喂狗了。

7 bombers   

n.轰炸机( bomber的名词复数 )；投弹手；安非他明胶囊；大麻叶香烟

参考例句：

• Enemy bombers carried out a blitz on the city. 敌军轰炸机对这座城市进行了突袭。 来自《简明英汉词典》
• The Royal Airforce sill remained dangerously short of bombers. 英国皇家空军仍未脱离极为缺乏轰炸机的危境。 来自《简明英汉词典》

8 refinery   

n.精炼厂，提炼厂

参考例句：

• They built a sugar refinery.他们建起了一座榨糖厂。
• The purpose of oil refinery is to refine crude petroleum.炼油厂的主要工作是提炼原油。

9 unaware   

a.不知道的，未意识到的

参考例句：

• They were unaware that war was near. 他们不知道战争即将爆发。
• I was unaware of the man's presence. 我没有察觉到那人在场。