Use int for variables that do not require decimal points.

对于不需要小数点的变量，使用整数。

Too many decimal points in number

数字中有太多小数点

For example, n3 will tell the formatter to make the argument a number with 3 decimal points.

例如，n3就是让格式化程序将这个实参转变成一个具有3 个小数点的数字。

Exchange dealers only work with these differences, i. e. with discount and premium, expressed in decimal points.

即期汇率是外汇交易商在某一指定日期将一种货币转换成另一种货币时所使用的汇率。