hair-trigger

名词 hair-trigger:

1. a gun trigger that responds with little pressure
   同义词：hair trigger

hair-trig.ger

adj.（形容词）
Responding to the slightest provocation or stimulation:
一触即发的：对最细微的刺激或挑动起反应的：
例句：
a hair-trigger temper; a hair-trigger reaction.
一触即怒的脾气；一触即发的反应