(usually be certified) to give sth an official document proving that it has reached a particular standard of quality 为（某物）颁发质量合格证书；证明…合格◆All our products are certified 100% organic. 我们的所有产品均获证明是 100% 的有机物。
(usually be certified) to give sb an official document proving that they are qualified to do a particular job 向（某人）颁发专业合格证书◆She's certified to work on jet engines. 她具备从事喷气式发动机工作的专业资格。◆a certified consultant/accountant 持有执业资格证书的顾问／会计师
to state officially, especially in writing, that sth is true （尤指书面）证明，证实◆The accounts were certified ( as) correct by the finance department. 经财务部门证实，账目正确无误。