As the actual cost is smaller than the standard cost, it saves number as the favorable difference, generally express with the negative number.

当实际成本小于标准成本，其节约数额为有利差异，一般用负数表示。

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The Coca Cola and Pepsi Cola are of the two largest cola brands, the difference of which is always the favorable and heated topic.

可口可乐和百事可乐是全球最大的两个可乐品牌，他们之间的比较和差异，也一直是人们津津乐道的话题。

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The accelerations of sled under different initial velocities were calculated and compared. The curves are similar and have small difference, so the system has the favorable stability.

计算了不同初速下台车的加速度曲线并进行了对比，结果表明两曲线相似且差别很小，具有良好的稳定性；

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Only 33 percent have a favorable opinion of Republicans, while 53 percent like the Democrats -- a big difference.

CNN: Analysis: Independents split over McCain, Obama