a. 有授权证书的

[ adj ]
furnished with or authorized by a certificate:
<adj.all>
certificated teachers

Certificate \Cer*tif"i*cate\, v. t. [imp. & p. p.
{Certificated}; p. pr. & vb. n. {Certificating}.] [See
{Certify}.]
1. To verify or vouch for by certificate.

2. To furnish with a certificate; as, to certificate the
captain of a vessel; a certificated teacher.

certificated \certificated\ adj.
officially documented; -- of people.

Syn: credentialed, documented.
[WordNet 1.5]