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once (EN)
наречие, союз

наречие “once”

once (more/most)
  1. один раз
    She has visited Paris once in her life.
  2. однажды
    She once lived in Paris before moving to New York.
  3. ни разу
    He didn't look up from his book once during the entire meeting.
  4. один раз (в математике)
    Once five is five.

союз “once”

once
  1. как только
    Once the rain stops, we can go outside to play.