显列是汉语词语，解释为高位。
然而，在sql语句中，可以始终显式引用一个隐式隐藏的列。
However, an implicitly hidden column can always be referenced explicitly in SQL statements.
即使程序需要每一列，最好根据sql语句中的名称来显式地寻找每一列，以便增加清晰度和避免以前犯的错误。
Even if the program needs every column, it is better to ask for each column explicitly by name in the SQL statement for clarity and to avoid the previous pitfall.
更新了上载功能和列出文档的视图，允许显式地选择要显示的模型属性（列）。
The upload functionality and the view listing the documents was updated to explicitly select the model attributes (columns) to be displayed.
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