| n 用法:
1 small metal barrel for holdinggunpowder （金属的）小型火药桶. 用法:
2 (fig 比喻) potentiallydangerous or explosive situation 具有潜在危险的或爆炸性的情势:
Rising tensions have turned the area into a powder-keg and any incident could set off a riot. 形势越来越紧张, 该地区已成了火药桶, 任何小事均能激起一场动乱. |