keg (usually made of metal) for gunpowder or blasting powder
a potentially explosive state
powder keg 例句
英汉例句
what was once a forest becomes a virtual powder keg of untapped fuel.
森林就变成了未开启的虚拟引火气罐。
3:despite all the diplomatic efforts to achieve peace, yugoslavia is still a powder keg waiting for a match to set off another round of fighting between the warring factions.