Some have been more aggressive than others, but overall, their experience shows that concerted steps to improve air quality do work, and they save lives.

有些城市表现的比其他地区更激进，但总体而言，他们的经验表明，改善空气质量的联合措施有所见效，拯救了生命。

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Editors should improve their overall professional quality in format designing, in order to become qualified editors in the new century.

编辑在版式设计工作中，要全面提高专业的综合素质，成为新世纪合格的编辑工作者。

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And the key to providing active and quality service is to change the mindset of archives staff and improve their overall qualities at the same time.

转变档案人员的思想观念，提高档案人员的综合素质，是搞好主动服务与优质服务的关键。

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It is not just enough to improve the quality of the teaching standards, as was done in the past, it is also important to improve the overall quality of school leadership and management to allow teachers to become more effective in their roles.

UNESCO: Professional Standards for School Principals: Tuvalu Initial Workshop | United Nations Educational, Scientific and Cultural Organization