单词学习：certification 名词
certification
/ˌsɜːrtɪfɪˈkeɪʃn/
证明，证书；认证；鉴定
Ms. Gu obtained her professional teaching certification last year.
顾老师去年获得了她的专业教学资格证书。
单词卡片
卡片已就绪
