an aggressive and violent young criminal
同义词：hood??/??hoodlum??/??goon??/??punk??/??thug??/??tough??/??strong-armer
a particularly difficult or baffling question or problem
同义词：poser??/??stumper??/??sticker
And though some EU countries are willing to shoulder burdens (Estonia, the Netherlands, Sweden and Poland are among the toughies), most have the wrong weapons for global operations.
ECONOMIST: Charlemagne
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。