The date of manufacture of the jewellery has not been authenticated.这些珠宝的制造日期尚未经证实.The document was authenticated by a seal.文件有印鉴为凭.A juridical precedent is nothing but " authenticated custom ".司法惯例只不过是 “ 权威的惯例 ” 罢了....

authenticated的音标：...

v.证明是真实的、可靠的或有效的( authenticate的过去式和过去分词 )，鉴定，使生效...

There have now been well authenticated reports that the use of this drug is very occasionally responsible for heart attacks.现在已有非常可靠的报告证明该药物偶可引发心脏病。The date of manufacture of the jewellery has not been authenticated.这些珠宝...