There may still be some ignition or explosive powder left in them.

因为可能放过之后还是会有一些能够点燃或会爆炸的粉末存在。

youdao

However, all liquids do not present the same degree of fire or explosive hazard.

但是并非各种液体均具有同等程度的火灾或爆炸危害。

youdao

Electrical power tools should not be used in gaseous or explosive atmospheres, unless approved for such use.

不经批准，不允许在高温易爆气体环境中使用电动工具。

youdao

Whereas the worst effects of a chemical or explosive attack are soon over, the devastation following a smallpox or anthrax outbreak can continue for weeks or months as the contagion goes on spreading.

ECONOMIST: Biowarfare could be the worst terrorist threat of all

Christopher Orlowski, science and technology officer for the robotics detachment at Bagram, said the soldiers and Marines sometimes name their robots and even give them battlefield "promotions" for successfully spotting mines or explosive devices.

WSJ: In the Afghan War, a Little Robot Can Be a Soldier's Best Friend

Or perhaps explosive pixie dust suddenly finds them whenever they head to the airport.

FORBES: Remember 9/11? TSA Finally Takes Off the Gloves, Reminds Critics of Reality.