噢， 前一天差不多， 就是這前三天，前兩天能吃什麽 不能吃什麽的說的不清楚。您這個完全不吃東西增加到兩天是隻喝白水？

前一天：

No solid food from now until your procedure is done. Begin a clear liquid diet (below). Drink at least 8 glasses of water or clear liquids during the day to avoid dehydration。