填空题 If your weight remains constant you must be using up all your calories，but if you are gaining weight then some of the calories you 1 are being stored as fat．如果你的体重保持不变，你就是在消耗掉所有的能量；但是如果你的体重在增加，那么那些你没有消耗的能量则被储存为脂肪。