在可能的患者安全改善与实际作出的改善方面存在着差距。
There is a gap between the patient safety improvements that are possible and the improvements that are actually being made.
在中国，农村与城市存在很大的差距，农村孩子在受教育和生活条件方面都不如城市。
In China, the rural and urban has very big disparity, rural children by education and living conditions in the city is not.
而我国目前在工程项目造价管理体制及对现代工程项目造价管理方法的研究、推广和应用方面，与世界发达国家还存在一定的差距。
But now there is still certain gap between our country and developed countries on the study, spreading, applying of the system and the method of modem project management.
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