These efforts resulted in 70 recommendations to improve visibility on the Colorado Plateau and a regulatory commitment and strategies to dramatically reduce sulfur dioxide levels in 13 states.

作为他们的努力成果，提出了70条关于增强科罗拉多平原可见度的建议，一个在13个州减少二氧化硫排放的规定和策略被通过。

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These efforts resulted in 70 recommendations to improve visibility on the Colorado Plateau and a regulatory commitment and strategies to dramatically reduce sulfur dioxide levels in 13 states.

作为他们的努力成果，提出了70条关于增强科罗拉多平原可见度的建议，一个在13个州减少二氧化硫排放的规定和策略被通过。

youdao