hair trigger

同根派生

According to the Brady Report, $60 billion to $90 billion of equities were poised on this hair trigger in mid-October of 1987.
根据一份研究报告显示：有高达600亿到900亿的股票投资在1987年十月中面临一触即发的险境。
Overall, the immune system appeared to be on a hair trigger, prepared to assault gut bacteria and held in check only by T-regs.
大体上，免疫系统似乎是处在一触即发的状态，随时准备攻击肠道中的细菌，全靠调节性T细胞控制著。
This gun has a hair trigger.
这支枪装着微力扳机。
She had her hair styled at the beauty parlor.
她的头发是在美容院做的。
He slicks his hair down with oil every day.
他每天搽油把头梳得光溜溜的。