计划生育家庭奖励扶助制度 reward and support system for eligible families that comply with family planning regulations
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由于技术和社会允许采用高度有效和普遍可接受的计划生育方法，因此家庭规模有所减少。
As technology and society permit highly effective and generally acceptable methods of family planning there has been a decline in family size.
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