Constant average social productivity of labour is the basis of historical cost measure attribute, constantmoney value stabilization is the basis of nominal moneytary measure unit.
历史成本会计原则的直接基础有两个，即社会平均劳动生产率不变假设和币值稳定假设。
2
No one should have to live with what a Texas mother described as constant stress, tension, even fear about money.
没有人应该生活在德克萨斯州的一位母亲所描述的持续的压力、紧张、甚至对金钱的恐惧之中。
3
If the ratio of broad to base money were constant, such fears would be warranted.