Imagine the formal module to be a tree-like data structure.

将规范模块想象成树形结构的数据。

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The browser takes this and converts it into a tree-like structure, as in Figure 1.

浏览器接受该页面并将之转换为树形结构，如图1所示。

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Documents elements can also be organized into tree-like hierarchical structure (Figure 14).

文档元素也可以被组织成类似树状的层次结构(图14)。

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I'd like to go by climbing a birch tree, And climb black branches up a snow-white trunk toward heaven, till the tree could bear no more, But dipped its top and set me down again.

我真想去爬白桦树，沿着雪白的树干，爬上乌黑的树枝，爬向那天心，直到树身再支撑不住，树梢碰着地，把我放下来。

耶鲁公开课 - 现代诗歌课程节选

Gone are the days of immobile, tree-like big men on the US team who stand under the basket throwing elbows and shoulders and muscling for position.

FORBES: What Are The Must-See Events This Olympic Games?

The architect created a tree house-like design, where two floors of living space floated above ground, anchored by a steel support.

WSJ: Tiny New House, Old Kyoto Soul

They must scale the near-vertical base by climbing rocks and tree roots like ladders -- or take a longer switchback trail -- and then begin an arduous hike uphill, sliding on mud and grasping at alders and shrubs to pull themselves up.

BBC: An Alaskan-style Fourth of July