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出典:Wikipedia
出典:『Wikipedia』 (2011/06/23 10:30 UTC 版)
Flagstone, (flag) is a generic flat stone, usually used for paving slabs or walkways, patios, fences and roofing. It may be used for memorials, headstones, facades and other constructions. The name derives from Middle English flagge meaning turf, perhaps from Old Norse flaga meaning slab.
flag-stone