These classes delegate responsibility for base class behavior to an instance of the base class.

这些类将基础类行为的责任委托给基础类的一个实例。

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All classes inherit from a common base class.

所有的类都从一个通用的基类继承。

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I also added a base class.

我还添加了一个基类。

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So the Tories are desperate to shore up their base among middle-class voters: time therefore for a risk.

ECONOMIST: Clue: not John Major

Our region offers a strong manufacturing and supply chain base, world-class research facilities, a highly-skilled workforce, and economic development organizations that foster innovation and entrepreneurship.

FORBES: The Smart Business of Advanced Energy

Over recent years this version of the party, with its more geographically diverse middle-class base, has lost influence.

FORBES: New Geographer