单词：keen-eyed 

形容词

• 
  [1.a.keen-eyed] (同义词:[keen-eyed(adj.眼光尖锐的 )]  [sharp-eyed( adj. 目光敏锐的 )]  )
• 
  注释列句：having keen eyesight
• 近义词 -> [eyed( adj. 有眼的 )]