authenticate /ɔːˈθɛntɪˌkeɪt/ ( authenticating, authenticated, authenticates )

• 1. 

  V-T If you authenticate something, you state officially that it is genuine after examining it. 鉴定

  例：

  He says he'll have no problem authenticating the stamp.

  他说他完全可以鉴定这枚邮票。