unavailable hours 中文意思是什麼
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The application is scheduled to be available twenty - four hours a day, seven days a week other than when unavailable for maintenance ; however, ups does not guarantee the availability of the application, or that access shall be uninterrupted or error - free
「應用程序」一周七天，每天二十四小時提供服務，但維護期間除外。然而， ups並不保證「應用程序」隨時可用，亦不保證使用時不受到干擾或絕無錯誤。
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