an evasion of the point of an argument by raising irrelevant distinctions or objections
同义词：quibble??/??cavil
the essence that makes something the kind of thing it is and makes it different from any other
同义词：haecceity
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。