在荷兰的城市地区，有70%的树木出现了类似的症状，而10年前这个数据只有10%，同时树木相对稠密的森林倒没有受到什么影响。
In the Netherlands, 70 per cent of all trees in urban areas show the same symptoms, compared with 10 per cent five years ago, the study found. Trees in densely forested areas are not affected.
它们显然更偏向于树底下有着稠密的灌木丛的阔叶树森林。
They clearly prefer hardwood forests with dense shrubs, bushes underneath the trees.
每年有几百万的游客，穿过罗杰斯通横贯加拿大都可以看到这个公园里最有名深渊的山谷、稠密的原始森林和壮观的高山景色。
The park is best known for its deep valleys, thick coniferous forests, and spectacular mountain scenery, all seen by millions annually as they travel Trans-Canada 1 through Rogers Pass.
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