ageing 老化
anti-aging 抗衰老
aging process 衰老过程
population aging 人口老龄化
aging in place 原地养老
aging of the population 人口老化
A: What is the biggest challenge facing our society today?
A：当今社会面临的最大挑战是什么？
B: I think it is aging. We need more resources to support the elderly.
B：我认为它是老龄化。我们需要更多资源来支持老年人。
1) 衰老，变老（指人的生理过程）
2) 老化（指物品、机器等性能下降）
3) 陈年（指酒类、奶酪等因时间而增值或风味改变）
4) 人口老龄化（社会学概念）
1. 老化；衰老
2. 陈年；成熟（尤指酒、奶酪等）
3. 人口老龄化
noun
1. the process of becoming old; the state of being old.
2. the process of deterioration or decline over time, especially in materials or food.
Synonym: ageing, senescence, deterioration