The Test Objects pane contains a tree that's a partial version of the script's object map.
测试对象面板包括一个树状结构，它是脚本对象图的一个部分版本。
Two blind subjects used clicks and their echoes to distinguish objects like a car, tree or flag pole.
两名盲人受试者通过敲击和听其回声来辨别诸如汽车、树或棋杆等物件。
To quote its intent "Compose objects into tree structures to represent part-whole hierarchies."
该模式的目的是，“把对象组合到树状结构中，以表示部分-整体关系。”
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