首先，随着大树长高，它们变得越来越粗、越来越不灵活：当风吹过周围的空地时，没有什么可以阻挡它们加速。
First, as they grow taller, big trees become thicker and less flexible: when winds blow across the surrounding cleared land, there is nothing to stop their acceleration.
“它们其实没有什么毛病，”他说，“它们只是太瘦弱了。”
"Nothing really ails them," he said, "but they are so thin and weak."
“没有什么是永远存在的！”然而，在这个陈述中，我们想到的是人工制造的技术性物体和产品，它们在使用过程中受到自然磨损。
"Nothing lives for ever!" However, in this statement we think of artificially produced, technical objects, products which are subjected to natural wear and tear during use.
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