Using drainage ability strong permeability foam concrete can be as light, the gravel based on in or artificial turf, as a playground use.

使用排水能力强的可渗性泡沫混凝土作为轻质基础，上面覆以砾石或人造草皮，作为运动场用。

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Using drainage ability strong permeability foam concrete can be as light, the gravel based on in or artificial turf, as a playground use.

使用排水能力强的可渗性泡沫混凝土作为轻质基础，上面覆以砾石或人造草皮，作为运动场用。

youdao