a statement asserting the existence or the truth of something
同义词:avowal??/??affirmation
保证;断言
assurance??/??certification??/??commitment??/??guarantee??/??security
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。