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@echo off
set str=今日明月在
set var=%str:~0,2%
echo %var%
set var=%str:~2,2%
echo %var%
set var=%str:~-1%
echo %var%
pause

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@echo off
set str=今日明月在
set var1=%str:~0,2%
set var2=%str:~2,2%
set var3=%str:~-1%
echo %var2%%var1%%var3%
pause

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