知人知面不知心 Fair without, foul within ; It's easy to know men's faces, but not their hearts

无知面纱 veil of ignorance

通知面试等进入下一轮 call back

从知面到知心 Ok ngoenz lox naj byaij daengz ngonz lox dungx

知识面 encyclopedic knowledge

全面的知识 comprehensive knowledge ; universal knowledge

书面通知 [管理] [法] written notice ; notice in writing ; Notice ; written message

扩展知识面 expand one's scope of knowledge ; Expand knowledge ; Extension of knowledge ; Expanding knowledge