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

人们可以穿行在他构建出来的破碎空间。（真的很好用。大家都爱用。

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

应用这法，大大减少了以往惯用的对行后期处理的环节 ，以及由于环节过多而引入的累积误差。