vim_count(help手册中的[count])

文章目录

[count] : An optional number that may precede the command to multiply or iterate the command. If no number is given, a count of one is used, unless otherwise noted.

就是命令重复执行的次数啦!
比如2d删除两个字符

Note that in this manual the [count] is not mentioned in the description of the command, but only in the explanation.