group separator character造句

• Valid group separator characters are determined by the
  有效组分隔符字符由当前
• Thousand separator specifier : if one or more , characters is specified between two digit placeholders 0 or that format the integral digits of a number , a group separator character is inserted between each number group in the integral part of the output
  首先，如果格式字符串在小数点（如果有）左边的两个数字占位符（ 0或）之间包含“ , ”字符，则输出将在小数点分隔符左边的每三个数字之间插入千位分隔符。