在许多半干旱的地区中，同样存在树带界限的下限区域；在这片区域之内，由于缺乏水分，森林下沿区域的植被通常会逐渐变成干草原或沙漠。

In many semiarid areas there is also a lower timberline where the forest passes into steppe or desert at its lower edge, usually because of a lack of moisture.

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首先，系统的其他一些进程会无法分配更多的内存；通常，这意味着系统多半会变得极度缓慢而且几乎没有响应。

First, the other processes on the system will be unable to allocate much more memory; generally, this means that the system will most likely become extremely sluggish and almost unresponsive.

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作为技术行业的人，我们通常认为自己是顶尖的开发人员，而多半是这样的。

As people who work in the tech industry, we usually consider ourselves top-notch developers and, for the most part, this is true.

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