第三人称单数
现在分词
过去式
过去分词
unite on a federal basis or band together as a league
同义词：federate??/??federalise
put under the control and authority of a federal government
同义词：federalise
enter into a league for a common purpose
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。