hell-for-leatherWiktionary 原文词源说明An early reference is from 1888 in "The Gadsbys" by Rudyard Kipling, referring to the effect on the leather of a saddle (or perhaps a crop) of riding a horse as fast as possible.释义（英文）副词 AdverbAs fast as possible; recklessly fast.词族相关词（1）hell-bent for leather