KEY: Obligation.SYN: Duty, necessity, compulsion, contract, bond, covenant, belief.ANT: Promise, word, choice, freedom, assurance, declaration,intention, exemption.
英语同义词词典收录了7932条英语词条,基本涵盖了全部常用同义词或反义词的辨析及翻译,是英语学习的有利工具。