certificate

n. /sərˈtɪfɪkət/ B2

证书；证明；文凭

An official document proving a fact or qualification.

仙境例句

Each pupil left with a certificate in Uglification, signed by the old teacher.

每个学生离校时都拿到一张“丑化”课的证书，上面有老先生的签名。