attest
/əˈtest; ə`tɛst/ v
(fml 文)
1 [Ipr, Tn] ~ (to) sth be or give clear proof of sth 作为或提供某事物的明证
His handling of the crisis attested to his strength of character. 他对危机的处理证明了他性格坚强.
Her outstanding abilities were attested by her rapid promotion. 她杰出的才干已经由她获得迅速提升而得到证明.
These papers attest the fact that.... 这些文件证明了这一事实....
2 [Tn] declare (sth) to be true or genuine; be a witness to (sth) 声称（某事物）属实或是真的; 作为（某事物）的见证
attest a signature 对签字作见证.