If the selection is a file (rather than a folder), then we adjust the text and tool tip to reflect that file name and enable it.
如果选择是文件(而不是文件夹)，则调整文本和工具提示以反映该文件的名称并启用它。
When it notices a change, it can look at the new selection and change its text, tool tip, and enabled state to reflect that.
当它注意到变化时，会查看新的选择并更改它的文本、工具提示和启用状态来反映这一变化。
A budget that doesn't accurately reflect your spending habits and expenses won't be a useful tool at all to get you closer to realizing your financial goals.
一份不能准确反映个人消费习惯和费用的预算对于让你实现财务目标没有任何作用。
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