hair-trigger ˌhɛəˈtrɪɡə ˈhɛrˌtrɪgər
ADJ [ADJ n] 一触即发的;转瞬即变的 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
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His boozing, arrogance, and hair-trigger temper have often led him into ugly nightclub brawls.
他嗜酒贪杯、狂妄自大且脾气暴躁，这常常使他在夜总会和人发生恶性斗殴。
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A hair-trigger situation has been created which could lead to an outbreak of war at any time.
局势风云突变，战争一触即发。
SYN volatile