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@echo off for /f "skip=3 tokens=1,2" %%a in (a.txt) do ( set /a "n+=1,1/(5-n)" 2>nul || echo %%a%%b。>>a_new.txt && exit /b set /p =%%a%%b,<nul>>a_new.txt )
@echo off setlocal enabledelayedexpansion for /f "skip=3 tokens=1,2" %%a in (a.txt) do ( set /a n+=1 if !n!==5 set "str=!str!%%a%%b。" & goto Next set "str=!str!%%a%%b," ) :Next echo %str% pause