Your program tried to execute an abstract virtual method.

你的程序试着运行一个抽象的虚拟方法。

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In the design of wrappers, we combine the data warehouse method and the virtual method.

在包装器的设计中，采用了将数据仓库方法与虚拟方法相结合的技术思想。

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Converting a virtual method call to a direct method call is called monomorphic call transformation.

把虚方法调用转换成直接方法调用，叫做单形monomorphic调用变换。

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The SBA should consider helping legitimize virtual work by showing off various models of how to work more efficiently and productively via the virtual method.

FORBES: The New World Of Work: Time To Think Virtually

The P835 also enables users to switch between 12-key, half-Qwerty and full-Qwerty virtual keyboard modes, allowing them to choose an input method that best suits their current task.

ENGADGET: ASUS gets official with P835 WVGA smartphone

The best method of accruing wealth, however, is to utilize the peer-to-peer marketplace to sell virtual items.

FORBES: How Online Gaming Can Teach Kids About the Economy