And I've reversed the fraction here because of the negative sign here.

我交换了分子和分母,因为这里有个负号。

麻省理工公开课 - 热力学与动力学课程节选

and they... there's a clearing house and they give bids.

然后他们……有个票据交换所，他们投标。

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Just swapping them, right? I temporarily hold on to what's in the i'th element so I can move the i plus first one in, and then replace that with the i'th element.

交换他们，对么？,临时的保存下第i个元素,然后把第i+1个元素移进来，把i+1的位置替换为第i个元素。

麻省理工公开课 - 计算机科学及编程导论课程节选