大家帮我分析一下英语题!!

来源：百度知道 编辑：UC知道 时间：2024/05/11 00:25:53
At the upper timberline the trees begin to become twisted and deformed. This is particularly true for trees in the middle and upper latitudes, which tend to attain greater heights on ridges, whereas in the tropics the trees reach their greater heights in the valleys. This is because middle- and upper- latitude timberlines are strongly influenced by the duration and depth of the snow cover. As the snow is deeper and lasts longer in the valleys, trees tend to attain greater heights on the ridges, even though they are more exposed to high-velocity winds and poor, thin soils there. In the tropics, the valleys appear to be more favorable because they are less prone to dry out, they have less frost, and they have deeper soils. There is still no universally agreed-on explanation for why there should be such a dramatic cessation of tree growth at the upper timberline. Various environmental factors may play a role. Too much snow, for example, can smother trees, and avalanches and snow creep can

At the upper timberline the trees begin to become twisted and deformed.
在上面的树带界线那树开始变成反常的和不成形的。

This is particularly true for trees in the middle and upper latitudes, which tend to attain greater heights on ridges, whereas in the tropics the trees reach their greater heights in the valleys.
这特别地真实对树在那中央和上面的纬度,容易在脊上达到较棒的高度, 然而在回归线中树延伸他们的较棒的高度在山谷中。

This is because middle- and upper- latitude timberlines are strongly influenced by the duration and depth of the snow cover.
这是因为中央- 和上面- 纬度树带界线强烈地影响在期间之前和雪的深度掩护。

As the snow is deeper and lasts longer in the valleys, trees tend to attain greater heights on the ridges, even though they are more exposed to high-velocity winds and poor, thin soils there.
当做那雪是深的而且持续比较长的在山谷中, 树容易在脊上达到较棒的高度, 即使他们多暴露的对高速度风和贫穷的, 瘦的在那里弄脏。

In the tropics, the valleys appear to be more favorable because they are less prone to dry out, they have less frost, and they have deeper soils.
在回归线中，山