它使用一个调度程序来发起周期性的事件，比如爬网程序执行和全文索引维护。

It USES a scheduler to initiate periodic events, such as crawler executions and full-text index maintenance.

youdao

它使用一个调度程序来发起周期性的事件，比如爬网程序执行和全文索引维护。

It USES a scheduler to initiate periodic events, such as crawler executions and full-text index maintenance.

youdao