托福詞匯之老齡社會
老年人:senior citizens/the elderly
退休:retirement 退休金:pension
養(yǎng)老保險:endowment insurance
老齡化社會:aging society
計劃生育:family planning
低出生率:low birth rate
空巢綜合癥:empty nest syndrome
孝順:filial piety
孝子:dutiful son
長壽:longevity
