客户体验改善计划(CEIP)是可选的，旨在提高软件的质量。
The Customer Experience Improvement Program (CEIP) is optional, and designed to improve software quality.
这项研究没有提供数据表明这一计划挽救了多少那些不骑车的人的生命，但是很显然，他们也同样受益于空气质量的改善。
This study did not provide a calculation for the lives saved in the non-cycling population but it stands to reason that they would also benefit from the improved air quality.
去年的一项交通减少污染的计划的测试(去年7月的单双号试行)以对空气质量改善的无法察觉而结束。
A test run of the transportation component of the pollution reduction plan conducted last summer resulted in undetectable air quality improvements.
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