If lastupdate is not present, then a password has never been set.

如果lastupdate不存在，就说明没有设置过密码。

youdao

From the above output, you can tell that user alpha does have a password set by the lastupdate entry.

在上面的输出中，可以通过lastupdate条目看出用户alpha已经设置了密码。

youdao

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.

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。

youdao