certation

例句：

1. 1. The company issued acertification of excellence in its product quality.
   该公司颁发了其产品质量卓越的认证。
2. 2. Thegraduating class received their certificatesfrom the university.
   毕业班学生从大学领取了他们的毕业证书。
3. 3. The new policy requiresall employees to have a certification of competency before they can be promoted.
   新政策要求所有员工在被提升前必须获得能力认证。