It also lets you represent authors who have written many books.

它还能够表示编写多部图书的作者。

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In the figure, boxes represent states, with the state written in them.

图中，框代表各种状态，具体状态写在框里。

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In the figure, boxes represent states, with the state written in them.

图中，框代表各种状态，具体状态写在框里。

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