他们使山艾树的数目受到控制。
我们发现，加热使山艾树生长速度过快。
much more rapidly, we found that the heating is causing profuse growth of the sagebrush.
主要的原料给它们牧草是山艾树。
在没有加热的自然区域，山艾树是很多昆虫的水源。
In the unheated natural area, sagebrush is a source of moisture for an army of thirsty insects.
四周风火肆虐，猛咬着杜松树，把山艾树烧成了灰烬。
Fire and wind raged all around, snapping juniper trees and incinerating the sagebrush.
在没有加热的自然区域，山艾树是很多昆虫的水源。
In the unheated natural area, sagebrush is a source an army of thirsty insects.
虽然这样对山艾树比较好，但是对邻近的植物造成威胁。
While that's good for sagebrush; it's not good for its plant neighbors.
虽然这样对山艾树比较好，但是对邻近的植物造成威胁。
While that's good for the sagebrush; it's not good for its plant neighbors.
但是就在几英尺之外，收到加热的山艾树生长状况好很多，虫子很少。
But just a few feet away, sagebrush under the heater grows far better with fewer bugs.
叹了口气，她把目光移到近些的风景来，茫然地盯着沿着铁路边的山艾树上新近冒出的银青色的叶子。
With a sigh, she returned her gaze to the nearer landscape, and stared sightlessly at the newly emerged tender silver-green leaves on the sagebrush lining the railroad.
夫妇俩从摩德纳附近的56号口拐出，离开高速路，沿着土路向北驶入汉布林山谷，不久便达到了一片遍布山艾树的红土地。
The couple turned off Highway 56 near Modena and headed north up a dirt road into Hamblin Valley. Soon they'd entered a stark terrain of sagebrush and red earth.
JohnHart预测，如果全球变暖或者长期的气候变化导致这里的全年平均气温升高几度，未来的几十年之内，鲜花会被山艾树吞噬。
If global warming, or long-term climate change, does increase the year-around temperature here just a few degrees, John Hart predicts, in decades to come, flowers could be crowded out by sagebrush.
JohnHart预测，如果全球变暖或者长期的气候变化导致这里的全年平均气温升高几度，未来的几十年之内，鲜花会被山艾树吞噬。
If global warming, or long-term climate change, does increase the year-around temperature here just a few degrees, John Hart predicts, in decades to come, flowers could be crowded out by sagebrush.
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