Message in Chinese (Traditional) (中文(繁體))
'<var>X</var>' 已有子項目,且無法新增 '<var>Y</var>'。'<var>X</var>' 只接受一個子項目。
Unlocalized message
'<var>X</var>' already has a child and cannot add '<var>Y</var>'. '<var>X</var>' can accept only one child.
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