Not all of the music people download from P2P networks is music that they would buy in stores or via legit download sites were the downloading option not available.
从P 2 P网络下载的音乐并不是他们会从商店购买或者通过合法方式从网上下载的音乐。
Subclassing the class is typically not an option here, since the method needs to be available to instances of the base class itself.
在这种情况下,继承这个类通常是行不通的,因为所添加的方法需要在基类的实例中可用。
The timeout option is not available in the POSIX semaphore.
在POSIX信号中不能使用超时选项。
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