In 2016, only one fourth of Chinese cities met the country's air quality standards, according to a survey of 338 cities nationwide from the Ministry of Environmental Protection.

根据环境保护部对全国338个城市的调查，2016年，只有四分之一的中国城市达到了国家的空气质量标准。

youdao

We will improve basic safety work in enterprises and improve technical and quality standards for production safety.

加强企业安全生产基础工作，完善安全生产技术规范和质量工作标准。

youdao

The company's branch issued their standards for milk quality in 1996, six years after it established its base in Shuangcheng.

1996年，在双城建立基地6年之后，雀巢公司发布了他们的奶质标准。

youdao

He said health boards are having to make difficult decisions in "balancing high quality standards of care with financial responsibility".

BBC: Health boards fail to plan their budgets, report claims

This was a crucial part of their plan designed to keep secrets in, and keep quality standards under close watch.

FORBES: Console Competitors Beware: Is Microsoft Designing A 7" Xbox Surface?

Because there is tremendous variability in manufacturing and quality control standards from company to company, choosing an effective product can be challenging.

CNN: How can I pick the healthiest brand of red yeast rice?