常見例句North American deciduous tree (Ulmus americana) having double serrate leaves and winged fruits. It is grown chiefly as an ornamental shade tree but often dies from Dutch elm disease. 美洲榆：一種北美落葉樹（美洲榆），有雙齒葉和雙翼果，主要作為觀賞性濃蔭樹，但?；己商m榆樹病而壞死Americana are featured in the exhibit. 展覽展出了關于美國（或美洲）的資料Agave americana L. var. rnarginata Hort. 金邊龍舌蘭Technology of Grafting Ulmus pumila var, pendula Rehd. 垂榆嫁接技術。Americana reflects the influence of many immigrations. 美國文化反映出了許多移民的影響 返回 Ulmus americana