A country cannot become strong and prosperous if it does not make education universal and improve its quality.

不普及和提高教育，国家不可能强盛。

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"Food additive" means any synthetic compound or natural substance put into food to improve its quality, colour, fragrance or taste, or for the sake of preservation or processing.

食品添加剂：指为改善食品品质和色、香、味，以及为防腐和加工工艺的需要而加入食品中的化学合成或者天然物质。

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The post office aimed to improve its quality of service.

邮局锐意改善服务质量。

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A spokeswoman for the mayor's office, Joanna Dovan,says the Pittsburgh area has been working to improve its air quality.

VOA: special.2009.07.13

Henderson,appearing on NBC, said General Motors is building a plan around four core brands and hopes to improve the quality of its vehicles to regain the confidence of the American consumer.

VOA: standard.2009.04.05

It will lower the cost of health care by billions and improve its quality.

WHITEHOUSE: THE WHITE HOUSE

Li had been looking for a way to hasten his young company's technology development and improve its quality and image.

FORBES

We've dramatically expanded early childhood education and will continue to improve its quality, because we know that the most formative learning comes in those first years of life.

CNN: Obama speech to Congress focuses on economy