a number of vehicles blocking one another until they can scarcely move
同义词：traffic jam??/??snarl-up
make more complicated or confused through entanglements
同义词：snarl??/??embrangle
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。