Your code often needs to walk through things item by item, whether it's a list, a file, or an XML document.

代码通常需要逐项遍历内容，不管它是列表、文件，还是XML文档。

youdao

You can obtain the list item by either querying an existing item or by adding a new one via SPListItemCollection.Add.

要获得一个列表数据项，既能通过查询一个现存数据项，又可以用SPListItemCollection.Add来添加一个新的。

youdao

By using the for clause in the after-aggregation detail filter on a non-projected data item, the underlying query automatically projects and groups the item as the outer most column of the list.

通过在一个未投射的数据项上的after - aggregation细节过滤器中使用for子句，底层查询会自动将该项目投射并分组为列表的最外层列。

youdao