| 1. | The air pollution and respiratory health program of the national center for environmental health , centers for disease control and prevention ( cdc ) leads cdc ' s fight against environmental - related respiratory illnesses , including asthma , and studies indoor and outdoor air pollution 描述:空气污染和呼吸健康这个项目是由国家健康环境中心为了控制和防治疾病而发起的,主要是研究是内外的大气污染,及对呼吸的影响。 |