说明：  只要或上有事件发生，门实例语句即被执行。只要或上有事件发生，就执行语句，并且只要或上有事件发生，就执行连续赋值语句。
(Or as long as there are incidents, the door was the implementation of example sentences. Or as long as there are incidents on the implementation of statements, and as long as or incidents on the implementation of continuous assignment statements.)