是的，您可以在一行中完成，甚至不需要管道，因为 -replace 可以像您一样处理数组希望它这样做(并且您可以链接运算符):

Yes, you can do that in one line and don't even need a pipeline, as -replace works on arrays like you would expect it to do (and you can chain the operator):

(Get-Content Input.json) `
    -replace '"(\d+),(\d{1,})"', '$1.$2' `
    -replace 'second regex', 'second replacement' |
  Out-File output.json

(为了可读性添加了换行符.)

(Line breaks added for readability.)

Get-Content 调用周围的括号是必要的，以防止 -replace 运算符被解释为 Get-Content 的参数.

The parentheses around the Get-Content call are necessary to prevent the -replace operator being interpreted as an argument to Get-Content.