In a synchronous procedure, all events take place within a specified period of time. 在同步方式中，所有动作都在特定的期间内产生。
While events are often used to handle user input and other actions that happen asynchronously, the events themselves happen in synchronous fashion. 尽管事件常常被用于管理用户输入和其他异步发生的动作，但事件本身则是以同步方式发生的。
