求翻译：广州市环保局5日对外披露，广州将在今年内新增18个空气质量监测站点，并实行监测结果实时公布，届时向公众实时发布空气质量监测信息的站点将达到28个。　是什么意思？

Guangzhou Environmental Protection Bureau, disclosed, Guangzhou will add 18 air quality monitoring site within the year, and the implementation of real-time monitoring results announced, then real-time air quality monitoring information to the public site will reach 28.

Guangzhou City Environmental Protection Bureau revealed that 5 in Guangzhou will be 18 this year, a new air quality monitoring stations, and real-time monitoring results released to the public at that time, real-time, air quality monitoring information to the site will be a 28.