对于加减法运算所需循环的平均数是2，而旧型号机却需12—15。

For adds and subtracts, the average number of cycles required is two, versus about 12 to 15 for the previous type.

youdao

我很希望知道这些使用球队上盘打出的比率的加减是上盘和用主客队进球数的平均值来计算出可能性的。

I would like to know the plusses and minuses of using the ratio of the times a team had over games was over versus using goal averages of home and away teams to calculate probabilities.

youdao