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- Eurasian elm closely resembling the American elm; thrives in a moist environment. 与美洲榆极相像的一种欧亚榆树，；在潮湿的环境才能健康生长。
- North American elm having twigs and young branches with prominent corky projections. 产于北美洲，细枝和幼小分枝上有引人注目的软木突起。
- North American elm having rough leaves that are red when opening; yields a hard wood. 生长于北美洲，叶面粗糙，初时呈红色，；木质坚硬。
- Cold resistance Species selected are weeping willow,spruce,white elm,Chinese tamarisk and desert date. 经抗寒性分析得出垂柳、云杉、白榆、柽柳、沙枣抗冻性较强 ;
- It is suggested that these characters could be consideredd as early selection and evaluation indexes of white elm. 可以考虑用它们作为白榆早期选择与评价的指标。
- Two ecological gradient axes (EGA) were suggested: EGA(CA) and EGA(r2). These two EGA were calculated among twenty provenances of American elm. EGA(CA_1)和EGA(r~2)。
- During my childhood, I sometimes arrived home from school to find my mother in a similar stance, staring through binoculars up into the arching American elm trees that shaded our home. 在孩提时代，有时我从学校回家后发现母亲正保持着同样的姿势，通过望远镜观察着那棵弯弯曲曲为我们家带来阴凉的美国榆树。
- Variance analysis and multiple comparison indicate that differences in all characters of white elm half-sib families and clones are significan at 0.05 level or 0.01 level except for the ratio of fresh weight to dry weight among half-sib families. 方差分析和差异显著性检验的结果表明，除鲜/干比在半同胞家系间差异没有达到显著水平外，其它性状在半同胞家系间和无性系间差异均达到了显著或极显著水平。
- So we measured the white elm tussock moth, an important poplar leaf-eating pest of the Northwest region, studied the energy flows and revenue and expenditure law systematically in its whole life history. 因此，本文选定西北地区杨树主要食叶害虫杨毒蛾为试虫、系统的研究了其整个生活史过程中的能量流动和收支规律，研究结果如下：
- Eurasian elm closely resembling the American elm 与美洲榆极相像的一种欧亚榆树
- Eighteen white elm (Ulmus pimila linn.) 本文以十年生白榆（Ulmus pimila linn.;）
- THE INVESTIGATION OF SELECTION AGE IN WHITE ELM PROVENANCE TEST 白榆种源试验中选择年龄的探索
- THE COORDINATION SELECTION OF SUPERIOR PROVENANCE AND FAMILY OF WHITE ELM 白榆优良种源和家系配合选择
- Bill Gates is an American citizen. 比尔·盖茨是美国公民。
- Geographical Variation in Provenances of White elm (Vlmus pumila L.) 白榆种源地理变异的研究
- He works at the American Embassy in Moscow. 他在莫斯科的美国驻俄大使馆工作。
- The American market turned roundsharply a week ago. 美国证券市场於一周前急遽反转。
- The Nestor or American philosophy. 美国哲学界中的耆宿。
- American girls are often very pretty. 美国女孩多很漂亮。
- Many American are couch potatoes these days. 现在许多美国人都是电视迷。
