单词：rf 

名词

• 
  [1.n.rf] (同义词:[releasing_factor]  [releasing_hormone(释放激素[因子] )]  [RF(=right field (棒球)右外场 )]  )
• 
  注释列句：a substance produced by the hypothalamus that is capable of accelerating the secretion of a given hormone by the anterior pituitary gland
• 上位词 -> [factor( n. 因素, 要素, 因数, 代理人 )]  [cause( n. 原因, 导致某事发生的人或事, 动机, 理由, 根据, 目标, 理想, 事业 vt. 引起, 惹起, 使(发生), 促成 )]  [origin( n. 起源, 由来, 起因, 出身, 血统, [数]原点 )]  [beginning( n. 开始 )]  [happening( n. 事件, 意外发生的事 )]  [event( n. 事件, 事变, 结果, 活动, 精力, 竞赛 )]  [psychological_feature(心理特征 )]  [abstraction( n. 提取 )]  [entity( n. 实体 )] 
• 下位词 -> [growth_hormone-releasing_factor] 
  
• 
  [2.n.rf] (同义词:[rutherfordium( n. [化](美国对 104 号元素的命名 ) )]  [Rf(=right field (棒球)右外场 )]  [unnilquadium( n. [化]104号元素 )]  [Unq]  [element_104]  [atomic_number_104]  )
• 
  注释列句：a radioactive transuranic element which has been synthesized
• 上位词 -> [chemical_element]  [substance( n. 物质, 实质, 主旨 )]  [matter( n. 事件, 问题, 物质, 内容, 实质, 原因, (印刷或书写的)文件, (文章或讲话等的)素材 vi. 有关系, 要紧 )]  [physical_entity]  [entity( n. 实体 )] 
• 
  [3.n.rf] (同义词:[reticular_formation(网状结构 )]  [RF(=right field (棒球)右外场 )]  )
• 
  注释列句：a complex neural network in the central core of the brainstem; monitors the state of the body and functions in such processes as arousal and sleep and attention and muscle tone
• 上位词 -> [neural_network]  [reticulum( n. 网状组织 )]  [network( n. 网络, 网状物, 广播网 )]  [system( n. 系统, 体系, 制度, 体制, 秩序, 规律, 方法 )]  [group( n. 团体, 组, 团, 群, 批, [地]界, [化]基 v. 聚合, 成群 )]  [abstraction( n. 提取 )]  [entity( n. 实体 )] 
• 所有相关单词 -> [reticular_activating_system] 
  部分总称 -> [brainstem(脑干 )] 
  所有总称 -> [brainstem(脑干 )]