the property possessed by a slope that is very steep
同义词：abruptness??/??steepness
the quality of happening with headlong haste or without warning
同义词：abruptness??/??precipitateness??/??precipitance??/??precipitancy??/??suddenness
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。