Adaptation of human body to natural environment
Addition of Hydrogen to Natural Gas
buildings closely related to natural environment
Chinese natural language
Chinese natural language interface
Chinese Natural Language Processing
Chinese natural language understanding
close-to-natural forest management
Close-to-natural theory
comprehension about natural language
concept space of natural language
conceptual analysis of natural language
concession right to natural resources
Connectionist model for natural language
Controlled Natural Language
converting from coal to natural gas
data base natural language interface
database for natural language