[with obj.]provide or serve as clear evidence of
证明，表明
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his status is attested by his becoming an alderman 他成了市政委员，这表明他很有地位
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[no obj.]
his numerous drawings of babies attest to his fascination with them .他画了许多婴儿的画，说明他很爱孩子。
[no obj.]declare that something exists or is the case
证明存在；证明为真实
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I can attest to his tremendous energy 我可以证明他精力充沛
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[with clause]
the deceased's solicitor attested that he had been about to institute divorce proceedings .死者的律师证实他曾准备提出离婚诉讼。
witness or certify formally
作证；作见证。
[no obj.]
〈史，主英〉宣誓服兵役。
[with obj.]recruit (someone) by putting them on oath to serve if called upon
使宣誓服役。
"early 16th cent.: from French