minor未成年人

self recognition对自我价值的认识

only child独生子女

self-centered?以自我为中心的

the elderly and the family?老人和家庭

life expectancy?预期寿命

to become common practice?蔚然成风

well-being幸福， 福利

respecting the old and loving the young尊老爱幼

population and family planning人口与计划生育

incentive?鼓励， 刺激

curb?限制， 抑制

consumption消费

institute设立， 制定

penalty惩罚

census人口普查 www.yyzuowen.com

population density人口密度

densely/sparsely populated人口稠密/稀少

aging of population人口老化

family planning计划生育

to practice family planning实行计划生育

to curb population growth控制人口增长

to have fewer and but healthier children少生优生

baby boom生育高峰

environment protection环境保护

ecological生态的

prerequisite/precondition先决条件

sustain维持

exploit/develop开发， 利用

perspective观点， 看法

extinction（生物）灭绝

deteriorate恶化

urbanization都市化

编辑:Liuxuepaper.Com