Everything in Castor mapping files begins with a plain old XML document, and a mapping root element.

Castor映射文件的开始是一个普通的XML文档，然后是根元素mapping。

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There are hundreds of related plants, including rubber trees, trees that produce castor and tung oil, and the cassava, a root crop.

大戟科有数百种相关植物，包括橡胶树，产生蓖麻油和桐油的树，以及木薯这种块根作物。

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