If you entered text in the Title box, then this text will appear as the Alt text for the photo.

如果你在标题框中输入了文本，那个这个文本就会作为图片的替换文本出现。

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As the WCAG sc 1.1.1 guidelines described, all non-text content should have an Alt text attribute.

根据WCAG SC 1.1.1指南描述，所有非文本内容都应有alt文本属性。

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Sometimes it's hard for a tester to identify whether the Alt text is needed or whether it can be left empty.

有时测试人员很难确定alt文本是否需要或能否设置为空。

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