单词：keenly 

副词

• 
  [1.r.keenly] (同义词:[keenly(adv.敏锐地 )]  )
• 
  注释列句：in a keen and discriminating manner; "he was keenly aware of his own shortcomings"
• 属于名词 -> [keen( adj. 锋利的, 敏锐的, 敏捷的, 热心的, 渴望的 )]