An ontology is the entity which composes of the concept of knowledge, the relationship between the concepts and formal description language can be identified by computers.
本体是由知识中的概念、概念间的关系以及计算机可以识别的形式化描述语言组成的实体。
Despite a number of opinions expressed both for and against a formal description language for RESTful applications, description languages like WADL have gained some limited ground.