U - number of unknown answers in the first pass of the repetition, i.e. the number of questions that have one or more dots in their first column of the repetition scores field.

U -没答对问题的个数，也就是在重复学习评分栏里有一个或多个点的问题个数。

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By putting a bar code data field in a label or envelope publication, you indicate where you want information from the bar code column to appear in the printed copies.

通过将条码数据域放在标签或信封出版物中，您可以指定希望条码列中的信息在打印出的副本上显示的位置。

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If you prefer to drag fields from the field list to the drop zones, you can... this is also the answer to how you add fields to the Filter or Column drop zones.

如果你喜欢从字段列表中拖拽字段到拖拽区域，你可以这么做……这也是怎样添加字段到筛选或列拖拽区域的答案。

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