n. 国书, 凭据, 证明书

[经] 凭证, 证书

[ noun ]
a document attesting to the truth of certain stated facts
<noun.communication>

Credential \Cre*den"tial\ (kr[-e]*d[e^]n"shal), a. [Cf. It.
credenziale, fr. LL. credentia. See {Credence}.]
Giving a title or claim to credit or confidence; accrediting.

Their credential letters on both sides. --Camden.


Credential \Cre*den"tial\, n. [Cf. It. credenziale.]
1. That which gives a title to credit or confidence.

2. pl. Testimonials showing that a person is entitled to
credit, or has right to exercise official power, as the
letters given by a government to an ambassador or envoy,
or a certificate that one is a duly elected delegate.

The committee of estates excepted against the
credentials of the English commissioners.
--Whitelocke.

Had they not shown undoubted credentials from the
Divine Person who sent them on such a message.
--Addison.