If quality requirements are unclear, state quality standards shall apply; if there are no state quality standards, generally held standards shall apply.

家质量标准履行，没有国家质量标准的，按照通常标准履行。

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The environmental quality standards and pollutant discharge or emission standards are divided into state standards and local standards.

环境质量标准、污染物排放标准分为国家标准和地方标准。

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A study from Fordham, published on February 16th, grades each state for the quality of its history standards.

2月16日出版的来自Fordham的研究报告，将每个州的历史标准质量作了划分。

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One interesting pilot scheme being tried out in Minnesota allows farmers who reduce fertiliser run-off and soil erosion to enjoy an exemption from future state and federal water-quality standards.

ECONOMIST: Nutrient pollution

Comprehensive early childhood programs like the Early Head Start and Head Start programs and state pre-kindergarten programs with high quality standards lead to better cognitive growth, improved behavior, better health and greater school success.

FORBES: Magazine Article

Oil companies have also been in the "eye of the storm", but the boss of state-run oil giant Sinopec says the country's oil quality standards are to blame for pollution, Economic Information Daily reports.

BBC: China media: Sex videos and houses