certify
/ˈsɜːtɪfaɪ/verb
(-ies, -ied)with obj.(常作be certified)
1- attest or confirm in a formal statement（以正式声明）证明, 证实：
the profits for the year had been certified by the auditors
年度利润已经由审计员核实
with clause the Law Society will certify that the sum charged is fair and reasonable.法律协会将证实该收费金额公正合理。
1.1
- officially recognize (someone or something) as possessing certain qualifications or meeting certain standards正式证明（某人, 某物）具有某种资格（或达到某标准）：
scenes of violence had to be cut before the film could be certified.
电影获准放映之前必须删除暴力镜头。
1.2
- officially declare insane正式证明（某人）精神失常。
词源
Middle English: from Old French certifier, from late Latin certificare, from Latin certus 'certain'.