另外，还可以针对给定URL的最后一次下载的日期和时间使用lastUpdate属性来查询GRplistController对象，并决定何时从Web刷新数据。

You can also query the GRplistController object regarding the date and time of the last download for a given URL using the lastUpdate property and decide when to try to refresh data from the Web.

youdao

另外，还可以针对给定URL的最后一次下载的日期和时间使用lastUpdate属性来查询GRplistController对象，并决定何时从Web刷新数据。

You can also query the GRplistController object regarding the date and time of the last download for a given URL using the lastUpdate property and decide when to try to refresh data from the Web.

youdao