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.
密苏里州Joplin城——前两个星期天的龙卷风给该城市的一些地区带来了毁灭性的破坏。 龙卷风横扫而过，所到之处景色全无，只留下一层积压的橡树，榆树和山核桃树残骸。
JOPLIN, Mo. — The tornado’s destruction two Sundays ago was so absolute in some areas of this city that the sweep of the landscape is now broken only by the thick skeletons of oak, elm and hickory.
波特兰一直有森林城市的美称，今天它拥有的树木至少2万棵，其中包括约100榆树，它们历经20世纪60年代爆发的荷兰榆树病而幸存下来。
Long called the forest City,? Portland maintains at least 20, 000 trees today, including about a hundred elm trees that survived a 1960s outbreak of Dutch elm disease.
长期以来被称为“森林城市”，波特兰今天至少保留着20,000棵树，其中包括约100棵榆树，它们在20世纪60年代所爆发的荷兰榆树病中幸存了下来。
Long called the "Forest City," Portland maintains at least 20, 000 trees today, including about a hundred elm trees that survived a 1960s outbreak of Dutch elm disease.
长期以来被称为“森林城市”，波特兰今天至少保留着20,000棵树，其中包括约100棵榆树，它们在20世纪60年代所爆发的荷兰榆树病中幸存了下来。
Long called the "Forest City," Portland maintains at least 20, 000 trees today, including about a hundred elm trees that survived a 1960s outbreak of Dutch elm disease.
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