In case you are puzzled, you meant to say "Can a 3D film be seen normally without the glasses ?". As others have pointed out, 2D is what you normally watch since it has both height and width. You need 3D for a depth illusion.
If you watch a 3D film without the glasses then the extra detail used by the galsses to create a 3D illusion wil make the film look fuzzy at the edges. You could probaby watch it but it won't be great.