1. No process in the command subtree has a signal handler. 命令子树中的进程没有信号处理程序。
2. Usually a thread waits on a semaphore that is signaled asynchronously by an interrupt handler. 通常情况下线程等待一个由中断服务发出异步信号的信号量。
3. The event handler should not contain the code to perform the required action. Rather call another method from the event handler. 一个事件控制器不应该包含代码执行要求的动作,而应该从事件控制器里面调用另一个方法。
英英解释
n.
1. one who trains or exhibits animals
2. an agent who handles something or someone
3. (sports) someone in charge of training an athlete or a team