1.You can change it only over time, as you save or dissave, or as the value of your assets change.
你只能随着时间的推移才能做到这一点，比如进行储蓄或者动用储蓄，以及资产的价值改变。
2.Fiscal policy can say, "No you don't. If you try to save, we will dissave on your behalf via budget deficits. "
财政政策将会说：“绝不可能，假如你要储蓄，我财政赤字来替你花钱。”
3.Because the prices were going up we had to dissave.
因为物价正在上涨，我们只好动用存款。