2016年12月六级第3套选词填空原文翻译及答案解析

The tree people in the Lord of the Rings — the Ents — can get around by walking. But for real trees, it's harder to uproot. Because they're literally rooted into the ground, they are unable to leave and go __26__.

《指环王》中的树人——恩特——可以通过行走四处移动。但对于现实中的树木来说，连根拔起更为困难。因为它们实际上扎根于土地，无法离开并迁往他处。

When a tree first starts growing in a certain area, it's likely that the __27__ envelope — the temperature, humidity, rainfall patterns and so on — suits it. Otherwise, it would be unable to grow from a seedling. But as it __28__, these conditions may change and the area around it may no longer be suitable for its __29__.

当一棵树最初在某个地区生长时，很可能气候环境——温度、湿度、降雨模式等——适合它。否则，它将无法从幼苗生长起来。但随着树龄增长，这些条件可能会变化，周围区域可能不再适合其后代。

When that happens, many trees like walnuts, oaks and pines, rely __30__ on so-called "scatter hoarders," such as birds, to move their seeds to new localities. Many birds like to store food for the winter, which they __31__ retrieve.

当这种情况发生时，许多树木如核桃树、橡树和松树，完全依赖所谓的“分散贮藏者”，如鸟类，将它们的种子移动到新的地点。许多鸟类喜欢为冬天储存食物，随后再取回。

When the birds forget to retrieve their food — and they do sometimes — a seedling has a chance to grow. The bird Clark's nutcracker, for example, hides up to 100,000 seeds per year, up to 30 kilometers away from the seed source, and has a very close symbiotic (共生的) relationship with several pine species, most __32__ the white bark pine.

当鸟类忘记取回食物时——它们有时确实会——幼苗就有机会生长。例如，克拉克星鸦每年可藏匿多达10万颗种子，距离种子来源最远30公里，并与几种松树物种有着非常密切的共生关系，尤其是白皮松。

As trees outgrow their ideal __33__ in the face of climate change, these flying ecosystem engineers could be a big help in __34__ trees. It's a solution for us — getting birds to do the work is cheap and effective — and it could give __35__ oaks and pines the option to truly "make like a tree and leave."

随着树木在气候变化面前超越其理想栖息地，这些飞行的生态系统工程师可能在重新种植树木方面大有帮助。这对我们来说是一个解决方案——让鸟类来完成这项工作既便宜又有效——并可能为脆弱的橡树和松树提供真正“像树一样离开”的选择。