The impact of coating resin and pigment on the cool roof properties was analyzed, and the endurable "cool roof 'PVDF coating with low dirt pick-up was presented."

分析了涂料树脂、颜料对凉爽屋顶性能的影响，以及PVDF涂层通过提高抗污性而保持长期凉爽的技术。

youdao

It was a plain dirt way, and overhead the branches of trees intermingled, while a round moon hung low in the sky as if to keep me company.

是一条泥土路，两旁都是树，枝桠在上空相接，低而圆的月亮仿佛在陪伴我走。

youdao

Re-choose your shoes. Low-top running shoes may be perfect for an indoor track, but once you start hitting dirt trails and rocky pathways, you'll need the support of a trail-runner.

慎重选择你的鞋子，低跟的跑鞋在室内的跑道上是很棒的，但一旦你开始要在比较脏的路上或者有小石子的路上跑步，你需要一双trail - runner的鞋子。

youdao

About a dozen men and boys gathered on a low dirt wall next to another field and watched the proceedings impassively.

NEWYORKER: The Taliban��s Opium War

Mr. Loughner spent his adolescence just north of Tucson, in a community where a flat carpet of strip malls and low subdivisions dissolves at its fringes into dirt roads and rolling, saguaro-spiked desert.

WSJ: Loughner's Prior Behavior Pointed to Signs of Imbalance