荷兰榆树病是一种广布的致死性榆树真菌病,1920年首报于荷兰,故名荷兰榆树病。
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。
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.
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.
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。
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.
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