attested

1.The handwriting expert attested to the genuineness of the signature.

笔迹专家作证该签名无讹。

2.Witnesses attested his account.

几名证人都证实了他陈述是真实。

3.Despite its immense popularity attested by countless collections, the quotation as a literary form has gone largely unstudied.

摘要尽管有无数收藏品证明了语录极受欢迎，但做为一种文学形式来说，语录一直以来大多未被探究。