It could be the result of the resource adapter receiving some external stimulus from a back-end system. Or it could just be some internal event, possibly even timer driven.

它可以是资源适配器接收到后端系统的一些外部刺激之后的结果，也可以仅仅是一些内部事件，甚至可能是由计时器驱动的事件。

youdao

In the end, I send them out with a long shopping list, set the timer on my phone to go off in ten minutes and drag Colin upstairs.

最后我开了个长长的购物单才把她们打发出门。然后用手机定了个十分钟的闹钟，拉起科林就上楼。

youdao

And finally, once your timer has reached its end, the task will be carried out automatically.

最后，当你的计时器达到终点的时候，任务就会立即执行。

youdao