... 集水坑泵 sump pump 浮项集水坑 roof drain sump 排水集水坑 drainage sump ...
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Roof rain runoff areas may require a drain or gravel sump to protect plants and structures.
屋顶雨水径流的地区可能需要排水渠或砾石坑保护植物和结构。
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You add in the sump pump, the French drain, the alarm system, the slate roof, the gutters, the generator and you convince yourself that you're safe.
WSJ: Anna Quindlen on a Message Delivered by Tornado | House Call
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