例如，概念主体和任务先决条件都允许公共块元素，如 p （段落）和 ul （无序列表）。

For example, both the concept body and the task prerequisites permit common block elements such as p paragraphs and ul unordered lists.

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当公共汽车抛锚时，她和她的丈夫用一个衣架和一块木头把它修好了。

When the bus broke down, she and her husband were able to fix it with a coat hanger and a piece of wood.

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通过安排不同类型的对象来执行公共方法，我们将分派决定移到对象中并从显式条件块中消除。

By arranging for objects of different types to implement common methods, we move the dispatch decision into the objects and out of an explicit conditional block.

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