The time taken between the occurrence of an event and the response to it 从一个事件触发开始到有了对它的回应的这个时间段。
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Interface provides synchronous and asynchronous communication between objects about the occurrence of an event 接口在对象之间提供有关事件匹配项的同步和异步通讯。
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Between the occurrence of an event and the delivery of the notification depends greatly on the application design 对于由事件触发的通知,事件发生与通知传递之间的“滞后时间”在很大程度上取决于应用程序的设计。