light pollution sources的意思|示意

At night scan the horizon for artificial light sources such as fires and streetlights, then walk toward the glow of light pollution.

晚上，扫视地平线，寻找像火和街灯的人工光源，然后朝发光的光污染方向走。

At night, scan the horizon for artificial light sources, such as fires and streetlights, then walk toward the glow of light pollution.

夜间，仔细眺望地平线，寻找诸如火和路灯之类的人造光源，然后朝光污染造成的光亮走。

The sources, definition and soils of the light pollution are analyzed.

指出了光污染产生的原因和光污染的定义及分类。

In the light of characteristics of the reservoir and the present situation of pollution sources around it, some potential threats are analysed and some countermeasures are put forward.

针对库区特点及周围污染源排放现状，分析了水库水质受到的潜在威胁，提出了水源保护的措施及对策。