In one's twilight years; advanced old age, nearing the end of life; extremely frail due to old age.
他虽然已是风烛之年，但依然保持着乐观开朗的心态。
Although he is in his twilight years, he still maintains an optimistic and cheerful mindset.
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In one's twilight years; advanced old age, nearing the end of life; extremely frail due to old age.