aindexassert under oath.宣誓,誓词,宣称,誓师大会Synonyms & Antonymsas invouch forSynonymsattest证明,见证,证言,证实guarantee保证,保障,担保,保证书swear to发誓,宣誓,发誓要,誓言vouch担保,担保书,担保人,保证Level 9More words in a →