Far back in the obscuring gloom of a prehistoric antiquity, man wore probably only the hirsute covering which nature gave him. Edward W. Byrn.十九世纪发明进展.
The social aim of education and its national aim were identified, and the result was a marked obscuring of the meaning of a social aim. 约翰·杜威.民主与教育.
But this latter argument, obscuring the majesty of the former, was one too many, for Ben answered contemptuously, The more spooneys they! 乔治·艾略特.米德尔马契.