to bargain

• It is impossible to bargain one - to - one for all sellers and buyers in real life . because different buyers cannot be distinguished , the seller may bargain with many buyers . at that time the effective interval changes , the seller tries to maximize his income in unit time , while buyers make decision independently
  但是，现实中的卖者和买者之间可能并不一定都是一对一的进行讨价还价，由于不能区分不同的买者，卖者可能会面对一对多进行讨价还价的情形，此时讨价还价双方的有效区间会发生一定的变化，而卖者是从自身的单位时间内收益最大化进行考虑，买者则是单独决策。