Above the tree line there is a zone that is generally called alpine tundra.
林木线上方有一个区域，通常被称为高山苔原。
The train was delayed because a tree had fallen across the line.
火车晚点是因为有一棵树横倒在铁轨上。
This line of code returns the user root of the data tree.
这一行代码返回数据树的userroot。
They crash through the tree line and suddenly stop in their tracks.
他们冲过树木的边缘，突然停住了他们的脚步。
Dark green native forest extends from the mountain tree line to the shore.
当地墨绿色的森林自山间林线一直延伸到海滨。
First, we have changed the sub tree line.
首先，我们已经改变了子树线。
So the World Tree is like a line to separated the two main parts.
因此，世界之树就像是一个分隔的两个主要部分线路。
It then prints the line information for each element in the tree.
最后输出树中每个元素的行信息。
The engine is derailed by a tree lying across the line.
有一棵树横在铁轨上，造成机车出轨。
The engine was derailed by a tree lying across the line.
有一棵树横在铁轨上，造成机车出轨。
They were below the tree line, so the path ran through a heavy forest.
两人行走在成排的林木下，脚下的小路一直延伸到森林深处。
It is right at the drip line of the tree.
它们刚好种在大树的滴水线下。
That afternoon they make a line down the middle of their tree house.
那天下午，他们还在他们的树房中间画了一条分界线。
That afternoon they make a line down the middle of their tree house.
那天下午，他们还在他们的树房中间画了一条分界线。
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