powder keg

剑桥词典

a situation or a place that could easily become extremely dangerous
火葯桶；一觸即發的侷勢；危險的地方
The build-up of forces in the region is creating a powder keg . 在該地區加強軍備是在制造緊張侷勢。
The new tax is a political powder keg which could result in widespread violence . 新的稅收政策是個政治火葯桶，會引起大範圍的激烈反應。 返回 powder keg