设计器宿主是到设计时环境的挂钩。

The designer host is the hook into the design-time environment.

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设计器宿主使用设计时环境来管理设计器状态、活动(例如，事务)和组件。

The designer host works with the design-time environment to manage designer state, activities (such as transactions), and components.

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处理根组件是设计器宿主、设计时环境和用户界面之间的粘合剂的唯一需要技巧的部分。

Handling the root component is the only tricky part of the adhesive between the designer host, the design-time environment, and the user interface.

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