perseverance

noun

the act of persisting or persevering
維持するまたは保存する行為

continuing or repeating behavior
継続または繰り返す行動
- his perseveration continued to the point where it was no longer appropriate
  それがもはや適等でないポイントまで彼は保持し続けた
persistent determination
持続する不退転さ

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