英语词汇itchy trigger finger的起源、历史背景-英语词源词典

词汇	itchy trigger finger
词源	itchy trigger finger. To have an itchy trigger finger is to be quick on the trigger, to be quick to act, itching to go, impetuous or even alert. The American expression was first recorded in 1903 as to have trigger itch. Within 30 years or so it took its present form.
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