单词：pda 

名词

• 
  [1.n.pda] (同义词:[personal_digital_assistant]  [PDA(abbr.Personal Digital Assistant 个人数字助理 )]  [personal_organizer(n. 个人备忘记事本 )]  [personal_organiser]  [organizer( n. 组织者, 建立者, 筹办者 )]  [organiser]  )
• 
  注释列句：a lightweight consumer electronic device that looks like a hand-held computer but instead performs specific tasks; can serve as a diary or a personal database or a telephone or an alarm clock etc.
• 上位词 -> [electronic_device]  [device( n. 装置, 设计, 图案, 策略, 发明物, 设备 [计]安装设备驱动程序 )]  [instrumentality( n. 手段 )]  [artifact( n. 人造物品 )]  [whole( n. 全部, 全体, 整体, 完全之体系 adj. 所有的, 完整的, 完全的, 纯粹的, 未损伤的, 未打破的 adv. 完全, 整个 )]  [object( n. 物体, 目标, 宾语, 对象 vi. 反对, 拒绝, 抗议 vt. 提出...来反对 )]  [physical_entity]  [entity( n. 实体 )]