a cert person的用法和样例：
- We'll be able to start tomorrow for a cert.
- Can anyone tell me how to obtain a Cert.
of Registrar of Marriage if through 教堂行礼?
- The result reveals its stiffness and first set inherent frequency both have a cert...
- In the absence of the refresh messages, the routers delete the reservation after a cert.....
- The Morocco international was widely seen as being a cert to move to Arsenal when his contract runs out in the summer.