old age

n.

晚年；白头；老境；老年期

The prognosis of depression in old age.
Averting the Old Age Crisis: Policies to Protect the Old and Promote Growth
Averting the Old Age Crisis - Policies to Protect the Old and Promote Growth
Midlife Hand Grip Strength as a Predictor of Old Age Disability
Does Weight Loss from Middle Age to Old Age Explain the Inverse Weight Mortality Relation in Old Age?
Echocardiographic measurements in normal subjects from infancy to old age.
Neuroplasticity in old age: sustained fivefold induction of hippocampal neurogenesis by long-term environmental enrichment.
Prospective study of the effect of blood pressure on renal function in old age: the Leiden 85-Plus Study
The rank-order consistency of personality traits from childhood to old age: a quantitative review of longitudinal studies.
Meta-Analysis of Quantitative Sleep Parameters From Childhood to Old Age in Healthy Individuals: Developing Normative Sleep Values A...