justify

證明的英語翻譯：

prove; certify; argue; demonstrate; justify; manifest; testify; vouch
【計(jì)】 proofness; proving
【化】 proofing
【醫(yī)】 certificate; certify; proof
【經(jīng)】 attest; attestation; authenticated; authentication; certification
certify; testimony

合法的英語翻譯：

be within the law; legality; legitimacy
【法】 be within the law; legality