Public Address systems (PA systems) are commonly used in American malls, airports and grocery stores.
公共广播系统在美国的商场、机场、和杂货店普遍使用。
The greatest impact can be achieved by creating healthy public policies that promote NCD prevention and control and reorienting health systems to address the needs of people with such diseases.
通过制定健康的公共政策，促进非传染性疾病的防控，以及通过重新调整卫生系统、解决这类疾病患者的需求，就可以取得最大效果。
Strengthening public health systems to address health effects of climate change.
加强公共卫生系统，处理气候变化的健康影响。
The cones of larger loudspeakers used in traditional public-address systems vibrate more slowly, making them better suited for sounds in the range of human hearing.
传统播音系统使用的大型扩音器中的椎体振动较为缓慢，使声音更加适合人类听觉范围。
And we must address inefficient distribution systems, and the lack of sufficient public funding for medicines.
而且，我们必须解决配送系统效率低下以及药物公共资金不足的问题。
And we must address inefficient distribution systems, and the lack of sufficient public funding for medicines.
而且，我们必须解决配送系统效率低下以及药物公共资金不足的问题。
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