Moholy-Nagy began working with light-sensitive technique, the photogram, in the early twenties.

人们可以穿行在他构建破碎空间中。（方形真很好。大家都爱。

By using this method, the segments for a photogram processed in later stage and the errors due to overmany links are reduced.

应这种方法，大大减少了以往惯进行后期处理环节 ，以及由于环节过多而引入累积误差。