以上来源于: WordNet
N-COUNT If you describe a situation or a place as a powder keg, you mean that it could easily become very dangerous. 火药桶; 危急的形势或地方
Unless these questions are solved, the region will remain a powder keg.
除非这些问题得以解决，否则该地区会一直是个火药桶。
Unless these questions are solved, the region will remain a powder keg.
除非这些问题得以解决，否则该地区会一直是个火药桶。
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。
The fact that the two vessels did sink is an unalterable fact of history, and while ship design and safety protocols have changed, the powder-keg nature of human behavior is the same as it ever was.
两艘船确实沉没了的事实是不可改变的历史事实，虽然船的设计和安全条款已经改变，但是，人类行为的火药库本质一如既往，没有改变。
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