Any of various deciduous trees of the genus Ulmus,characteristically having arching or curving branches and serrate leaves with asymmetrical bases. Elms are widely planted as shade trees.

 
  • 榆樹(shù),任一種榆屬的落葉樹(shù)木,有拱形或曲線(xiàn)形樹(shù)枝和鋸齒形不對稱(chēng)的樹(shù)葉。榆樹(shù)做為蔽陰樹(shù)被廣泛地種植。
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