Message in Chinese (Simplified) (中文(简体))
MC4610:“<var>X</var>”元素不是 AlternateContent 的有效子级。只有 Choice 和 Fallback 元素是 AlternateContent 元素的子级。
Unlocalized message
MC4610: '<var>X</var>' element is not a valid child of AlternateContent. Only Choice and Fallback elements are valid children of an AlternateContent element.
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