He kept his finger on the trigger.

他的手指一直勾着扳机。

《牛津词典》

Despite the insistence of military officers that a human's finger will always remain on the trigger, the speed of combat is quickly becoming too fast for human decision makers.

尽管军官们坚持说人类的手指将永远停留在扳机上，但是对人类决策者来说，这样的战斗速度已经变得太快了。

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In the 1960s John Kennedy fretted that without a test ban and other hurdles, eventually a score of countries could have their finger on a nuclear trigger.

在60年代，约翰·肯尼迪苦恼于没有试验禁令和其他障碍，最终一部分国家可以将他们的手指放在核按钮上。

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Second, he should have known better than to have his finger on the trigger until being immediately ready to shoot.

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The Brazilian Central Bank now has its finger on the trigger.

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Markets rallied last week when the latest set of FOMC Minute suggested the Fed had the finger on the trigger, as Dueker put it.

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