从这个意义上说，SETI 是纯科学系统发展的又一个重要推动力，它不断拓展我们的知识面。
In this sense, SETI is another cog in the machinery of pure science which is continually pushing out the horizon of our knowledge.
教员要转变观念，合理运用古代化教学手段，拓展先生的知识面。
Teachers should change their concepts, rational use of modern teaching methods, expand the students knowledge.
不仅如此，我还同时学到了很多西方的文化知识，拓展了我的知识面。
Besides, I've learned much western culture knowledge. And the range of my knowledge is expanded too.
应用推荐