In the future, scientists could use drugs to 'turn on' genes, which could trigger hair growth.

未来科学家可以用药物来“激发”基因，这样就可以刺激毛发的生长了。

The trap does not close every time a trigger hair is touched, because a lot of energy would be used up this way.

并非短毛每次被触动时，陷阱都关闭，因为这样会消耗很多能量。

This is how the trap knows to snap8 on a moving insect and not on a raindrop which only touches a trigger hair once.

这就是陷阱如何知道困住的是一只移动的昆虫而非雨滴的原因，因为雨滴只会碰触一次短毛。

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。

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。