ulmus的翻译，读音

例句

ulmus pumila open forest ecosystem plays an important role in Otindag Sandy Land. 榆树疏林生态系统是浑善达克沙地的重要组分之一. 。

Slippery Elm (ulmus rubra) bark was used both internally and externally by native Americans and early pioneer settlers. 榆（榆树杨梅）用树皮内部和外部的土生土长的美国人和早期定居者的先驱。

The temporal and spatial changes of ulmus pumila phenology and the relationship with climate factors in Northeast China from 1980 to 2005 were discussed. 探讨了1980-2005年中国东北榆树物候的时空变化与气候因子的关系。

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. 一种北美落叶树（美洲榆），有双齿叶和双翼果，主要作为观赏性浓荫树，但常患荷兰榆树病而坏死。

A 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. 一种北美落叶树（美洲榆） ，有双齿叶和双翼果，主要作为观赏性浓荫树，但常患荷兰榆树病而坏死。