terse

if not exist "D:\实验数据\9月份\记录001\2.txt" >a.txt echo D:\实验数据\9月份\记录001 
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@echo off
for /f "tokens=*" %%a in ('dir /s /b /ad d:\') do if not exist "%%a\2.txt" (>>a.txt echo %%a)
pause
 
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