证明 /zhèngmíng/ angolul

certify [certified, certifying, certifies]▼(to attest as to)
verb
[UK: ˈsɜː.tɪ.faɪ] [US: ˈsɝː.tə.ˌfaɪ]

evince [evinced, evincing, evinces]▼(to show or demonstrate clearly)
verb
[UK: ɪ.ˈvɪns] [US: ɪ.ˈvɪns]

prove [proved, proven, proving, proves]▼(to demonstrate that something is true; to give proof for)
verb
[UK: pruːv] [US: ˈpruːv]

certificate [certificates]▼(document containing a certified statement)
noun
[UK: sə.ˈtɪ.fɪk.eɪt] [US: sər.ˈtɪ.fɪkət]

reference [references]▼(information about a person)
noun
[UK: ˈre.frəns] [US: ˈre.fə.rəns]

testimonial [testimonials]▼(written recommendation)
noun
[UK: ˌtest.ɪ.ˈməʊ.nɪəl] [US: ˌtest.əˈmo.ʊ.niəl]