帮我翻译两个词：优生优育，集体所有制

人 口 生 育

常住人口
permanent population
流动人口 floating population
盲流 the unemployed migrant people
劳动力 labor force
外来工 migrant worker
临时工 seasonal worker
人口普查 census
人口基数 population base
人口稠密 densely populated
人口稀少 sparsely populated
人口爆炸 population explosion
人口过剩 overpopulation
出生率 birth rate
死亡率 mortality rate
自然增长率 natural growth rate
人口老化 aging of population
合法婚龄 legal age for marriage
结婚高峰 marriage boom
生育高峰 baby boom period
计划生育 family planning
提倡优生优育,鼓励晚婚晚育 advocate healthy pregnancy and scientific nurture, and encourage late marriage and postponed child-bearing
破除重男轻女习俗 change attitude of viewing sons as better than daughters
多子多福 the more sons, the more blessings
男尊女卑 Man is superior to woman
传宗接代 carry on the family line
养儿防老 bring up sons to support parents in their old age
避孕 contraception
避孕用品 contra