underdeveloped

动词 underdevelop:

1. process (a film or photographic plate) less than the required time or in an ineffective solution or at an insufficiently high temperature
   同义词：underdevelop

形容词 underdeveloped:

1. relating to societies in which capital needed to industrialize is in short supply
   同义词：developing
2. not yet fully developed
3. (of a photograph) lacking in contrast because it was left in the developer for less than the required time