Fall, remove or prevent sleep. " Ensure " It is to keep a vigil over a person or object ( e.g. " ensure the 34 weapons; which is spending the night before a battle in prayer before the weapons ) so " reveal " seems to be an antiphrasis.
It means difficulty falling asleep, difficulty sleeping. Insomnia, wakefulness, wakefulness, nervousness, nervousness. It is also zeal, interest, care, attention, care. Stay up late.
Run the veil, discover