[问题求助] PowerShell怎么读写utf32编码的文件？[已解决]

$str = @'
a1江苏
b2上海
c3浙江
d4河南
e5陕西
'@

$UTF32LE = New-Object System.Text.UTf32Encoding $false, $true;
[IO.File]::WriteAllText('1.txt', $str, $UTF32LE);
$str2 = [IO.File]::ReadAllText('1.txt', $UTF32LE);  
$str2;
[Console]::ReadLine();
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