Grace Miller and Theresa Vincent staff the PBX, or private-branch exchange, switchboard at the Southern California Air Pollution District office in 1959.

1959年，南加利福尼亚空气污染地区办公室专用分组交换机的接线员格雷斯·米勒（Grace Miller）和特瑞莎·文森特（Theresa Vincent）位于接线总机旁边。

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The model was applied to Hanyang District, Wuhan to study urban non-point source pollution control technology, and satisfactory results were achieved.

所建模型已成功地应用于武汉市汉阳地区城市面源污染控制技术研究，获得了满意的结果。

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The existing pollution in Dong Sheng District was discussed, and the measures which have been adopted were analyzed, some ideas were put forward.

阐述东胜地区存在的污染及目前东胜区采取的措施和本人的几点看法。

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Air in San Diego County remains unhealthy, especially in Oceanside and Chula Vista, said Bill Brick, senior meteorologist for the Air Pollution Control District.

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Because of the smoke, ash and winds, people in affected areas were urged to be cautious and to avoid unnecessary outdoor activities, the Ventura County Air Pollution Control District said.

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