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Quercus borealis

资料来源 : WordNet®

Quercus borealis
     n : large symmetrical deciduous tree with rounded crown widely
         distributed in eastern North America; has large leaves
         with triangular spiny tipped lobes and coarse-grained
         wood less durable than that of white oaks [syn: {northern
         red oak}, {Quercus rubra}]
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