A sealed class cannot be used as a base class.

密封类别不能当做基底类别使用。

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The WebComponent ACTS as a base class for simple HTML components such as Label and Image.

WebComponent充当诸如标签和图像这类简单的HTML组件的基类。

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A class that a user must add as a base class or as a member to make the user class compatible with intrusive containers.

一个类，用户必须将它作为基类或作为成员加入到用户类中，使得用户类兼容于介入式容器。

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In interviews with The Associated Press, friends and family members described Duncan as a man who grew up in a working class family in Boiling Springs, a rural area at the base of the Blue Ridge Mountains.

NPR: SC Man Among Leaders Arrested In FL Gambling Probe

Pte First Class Kimberly Rivera had been serving as a base guard in Baghdad when she fled to Canada in 2007 with her husband and children.

BBC: Kimberly Rivera