雨棚按水平投影面积的一半计算；
PC板雨棚较好解决抗风和噪声的问题。
PC board canopy better solve the problem of wind resistance and noise.
而在它的中心聚居地，贫困的家庭在塑料雨棚下生活。
In the central reservation, indigent families live under plastic sheeting.
而在它的中心聚居地，贫困的家庭在塑料雨棚下生活。
In the central reservation, indigent families live under plastic sheeting.
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