English to English

noun (n)

• sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)

  ketajaman visi; menggambarkannya kemampuan untuk menyelesaikan baik detail (biasanya diukur oleh snellen carta)

  Synonym:
  acuity, visual acuity
  

  source: wordnet30
• lively attentiveness

  rancak attentiveness

  Synonym:
  alertness, on the qui vive
  

  source: wordnet30