flashpoint
noun uk/ˈflæʃ.pɔɪnt/ us/ˈflæʃ.pɔɪnt/
(VIOLENCE)
[ C ]（暴力）即将爆发的地点（或阶段）
a place or stage at which violence might be expected to begin
Because of the army's presence, the city is seen to be the flashpoint of the area. 由于军队进驻，那座城市被看作是该地区暴力活动一触即发之地。
(TEMPERATURE)
[ C usually singular ] chemistry specialized（液体的）燃点，闪（火）点
The flashpoint of a liquid is the lowest temperature at which the vapour it produces will burn in air.