若要添加附加的排序列，就要在选择附加列时，一直按住控制键。

To add additional sort columns, keep the control key pressed while choosing additional columns.

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而在按住CTRL组合键时，用户可以选择列表中的多个选项。

While holding down the CTRL key, the user can choose multiple options in the list.

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例如，如果用户选择了一个组件，然后按住shift键并选择另外三个组件，则每次向选择列表中进行添加时，都会调用该方法。

For example, if a user selects one component and then holds down the shift key and selects another three, the method is called for each addition to the selection list.

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