hell-for-leather

副词 hell-for-leather:

1. at breakneck speed

hell-for-leath.er

adv.（副词）
adj.Informal （形容词）【非正式用语】
At breakneck speed:
飞快的：以危险的高速的：
例句：
.The journey back he made along the coast road, traveling hell-for-leather.(Idival Jones)
.回来的旅程他沿着沿海公路飞快地驾车.(伊蒂沃尔·琼斯)