Dutch Elm Disease 荷兰榆树病 ; 榆树荷兰病 ; 榆树枯萎病 ; 荷兰榆树菌
N a widely planted hybrid elm tree, Ulmus hollandica, with spreading branches and a short trunk 荷兰榆树
In both North America and Europe, fungus-causing diseases such as Dutch elm disease have killed off millions of stately trees that once gave beauty to forests and cities.
在北美和欧洲，像荷兰榆树病这样的真菌疾病已经杀死了数百万棵曾给森林和城市增光添彩的高大树木。
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。
The output was adjusted to the same pitch as the tree's screams and I threatened him with everything from falling branches to Dutch elm disease.
输出的信号被调整至与杨柳树的尖叫声一样的音调，我用各种可能来威胁他，从突然掉落的树枝，一直到荷兰榆树病，什么都有。
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