一旦唤醒这些影像，我就又感受到了那最初的本真的快乐——它们神奇地被重新唤回。
What I feel when I summon up those images is my aboriginal16 happiness, magically retrieved.
一旦条件满足，还需要一种方法以唤醒因等待满足特定条件而睡眠的线程。
Once the condition is met you need a method to wake up the thread (s) that are waiting for that particular condition to become true.
因为UI线程在睡眠，所以当UI线程一旦被唤醒例子程序就会列出5个定时器事件(4到8)并能够处理处理函数。
Because the UI thread was sleeping, however, the sample application displays the five timer events (4 through 8) all at once when the UI thread wakes up again and is able to process the handlers.
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