But creating such a warhead is the easier part of building a bomb. Harder by far is making the fuel.

然而制造弹头仅仅是核弹研发中比较简单的一步，到目前为止，制造原料要困难得多。

youdao

A spokesman said the plane was checked, no bomb was found and the aircraft left an hour and a half late. He added that such alerts were relatively common.

一位发言人说他们检查了飞机，没有发现炸弹，却导致飞机晚点一个半小时，他还说他们经常接到这样的警告。

youdao

The idea of building flying saucers to bomb London and even New York could have been just such a scheme.

可怕的是，这个超级飞行器曾被下达命令---秘密空袭纽约和伦敦试图扭转二战局势。

youdao

On occasion, such as a liquid bomb scare in August 2006, the TSA has expanded the list, banning large containers of liquids and gels.

CNN: TSA to allow pocketknives, some sports equipment

In the United Kingdom, the Food Standards Agency, described as a food watchdog, wants to defuse the so-called obesity time bomb and is considering such methods as a ban on TV advertising aimed at children, health warnings on foods high in salt, sugar and fat, and requiring school vending machines to offer healthy alternatives, according to press reports.

FORBES: Magazine Article

The unexploded devices that were recovered could provide a treasure trove of information such as fingerprints and indications of the bomb maker's design, a federal law enforcement official who now works in the intelligence community said.

CNN: FBI to take lead in investigating Boston Marathon bombings