榆

It was a good table too, sturdily constructed of elm.

这也是张很不错的桌子，榆木的，很结实。

Water pipes used to be made out of elm.

水管过去是用榆木做的。

" I haven´t any pity for a man who would be such a chump as that. "

" 我对这种榆木脑瓜的家伙一点也不可怜。 ”

Holmes crossed two compatible races of ceratocystis ulmi, the causal agent of Dutch elm disease.

霍姆斯曾把荷兰榆病害的致病因子，长喙壳的两个亲和小种杂交。

Lanzhou fern in the main origin of the Yuzhong Nanshan Yam area.

兰州蕨菜的主要产地在榆中南山的二阴地区。