contexts语境contextn.上下文；环境；背景context of language语境context sensitivity语境制约,上下文制约context information上下文信息context-based AAC自适应算术编码context of ideology意识形态的语境context association前后关系联想context-sensitive上下文相关的context-dependent上下文有关,随上下文决定context-free text离散文本context classifying语境划分