为了改善孕产妇健康，应该在社区水平发现卫生系统的能力和质量的差距以及妨碍孕妇获取卫生服务的因素，并且扭转这一局面。
To improve maternal health, gaps in the capacity and quality of health systems and barriers to accessing health services must be identified and tackled at all levels, down to the community.
在美国殖民地，报纸和小册子等广告和传播媒体成为推销商品和服务的主要因素。
In the American colonies, advertising and communications media like newspapers and pamphlets became a major factor in marketing goods and services.
其影响是复杂的，受社会经济因素、卫生服务、情感支持等多个生理机制的影响。
The effects are complex, affected by socio-economic factors, health-service provision, emotional support and other more physiological mechanisms.
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