hair-trigger balance极不稳定的平衡
hair-trigger operation毛发触发器操作
hair-trigger method发状触发方法
A hair-trigger the一触即开
a hair - trigger temper他的演说引起了一场武装冲突
ADJ（形容词） If you describe something as hair-trigger, you mean that it is likely to change very violently and suddenly. 一触即发的; 转瞬即变的 [ADJ n]
His boozing, arrogance, and hair-trigger temper have often led him into ugly nightclub brawls.
他嗜酒贪杯，傲慢自大，脾气暴躁，这经常使他在夜总会里和别人发生恶性斗殴。